bluuebunny/crossref_metadata_2025 huggingface dataset:
An assessment of aquaculture table-size fish farmers activities in Kainji Lake Basin, Nigeria
Authors: Omeje J.E. , Sule A.M. , Aguihe E.O.
Published: June 2020

The study assessed aquaculture table-size fish farmer’s activities in the Kainji Lake basin, Nigeria. Specifically, the study examined aquaculture  activities in the area, assessed market information, channels and support organizations, and identified the major constraints to aquaculture table- size fish farming in the area. A two-stage sampling technique was used to select 120 table-size fish farmers. Primary data were collected with a questionnaire and presented using descriptive statistics. The result shows that majority of the respondents were males (82.1%), with mean age of 36.7 years, 53.8% had tertiary educational qualification while 66.7% had more than six years’ experience in fish farming. Majority (92%) of the table-size fish farmers operate with less than two ponds, 51% practice earthen pond system, while 91% of the farmers engage in the business for the purpose of generating income. Majority (90%) of the farmers sell their farmed fish after six months, 80% of the sales take place at farm-gate level, 80% of the owners of the fish farms are contacted directly by fish buyers. Also, majority (53.8%) of the fish buyers are the middle men who buy and resell to other fish users (processors, consumers, farmers etc). The major constraints to table-size fish farming were inadequate capital (46.2%), poor water management (33.3%), high cost of feed (10.3%) and poor pricing (10.3%). It is therefore recommended that fish farmers should form  strong Farmer Associations to enable them combat the issues of accessing capital and poor pricing. This will aid in business expansion as the farmers will take advantage of economy of scale.

Key words: aquaculture, table-size, fish, farmers
Influence of prior feeding experience and food deprivation on flour selection and utilization by the red flour beetle, Tribolium castaneum (Herbst)
Authors: Ojumoola A.O. , Obikwe E. , Oladigbolu A.A. , Adesiyun A.A.
Published: June 2020

The influence of prior feeding experience and food deprivation on selection and utilization of wheat flour (WF), melon seed flour (MSF) and mung bean flour (MBF) by Tribolium castaneum reared on WF was investigated in this study. Flour selection, measured by percentage gravitation and acceptance of the flours by beetles (when fed and also when starved for 48 hours), was studied in choice and no-choice tests. On the other hand, T. castaneum’ s utilization of flours for growth and development was determined by monitoring population changes for three months in each flour type infested with 10 beetle pairs. Results of three-flour choice tests showed that gravitation (55.56%) and acceptance (54.44%) were significantly higher (p < 0.05) in WF than MSF and MBF. Also, MBF significantly (p < 0.05) had higher beetle gravitation (80.56%) and acceptance (72.78%) than MSF in a two-flour choice test. In no-choice tests, percentage gravitation and acceptance of beetles to the control (no flour situation) was significantly lower (p < 0.05) compared to MBF. Selection of MSF by T. castaneum was, however, not significantly different (p > 0.05) from the control in the study. Flour utilization followed a similar trend with significantly higher (p < 0.05) mean adults and larvae numbers in WF (211.33, 81.33) and MBF (87.67, 31.00), respectively compared to MSF (28.33, 7.67) at three months after infestation. The study concluded that flour selection in T.  castaneum is influenced by prior feeding experience but not by food deprivation status of the beetles. Flour utilization is, however, neither influenced by prior feeding experience nor by food deprivation.

Key words: Tribolium castaneum, host range, choice test, no-choice test, flour
Blood pressure lowering effect of the aqueous extract of Satureja
Authors: Hika Debabe , Mammo Wendimagegn , Hymete Ariaya , Tolessa Tesfaye , Yeshak Mariamawit Y.
Published: June 2020

Satureja punctata Benth. Briq. (Lamiaceae) is a small shrub known by its vernacular name “Lomishet”. It  is used in Ethiopian traditional medicine for the treatment of hypertension, diabetes, liver disease, headache and febrile illness. Mean Arterial Blood Pressure (MABP) lowering effect and vasorelaxant activity of the aqueous extract of aerial parts of the plant were studied. Intravenous administration of the aqueous extract at different doses brought a fall in MABP in normotensive guinea pigs and also in renovascular hypertensive guinea pigs. The extract also caused a dose-dependent relaxation of precontracted aorta; with a maximum relaxation of 98.19% achieved at 40 mg/ml. Preparative reversed-phase HPLC analyses of the extract resulted in the isolation of two phenolic compounds, namely, rosmarinic acid and linarin. The structures of these compounds were elucidated using UV, IR, MS, and NMR (1D and 2D) techniques. Furthermore, rosmarinic acid showed significant (p < 0.01) reduction of MABP in normotensive guinea pigs at doses of 0.75, 1.50 and 3.00 mg/kg. The findings of this study suggest that the aerial parts of S. punctata have genuine antihypertensive activity.
Antileishmanial activities of leaf latex and compound isolated from  Aloe ghibensis Sebsebe & Friis
Authors: Tekassa Tamirat , Tewabe Yitagesu , Bisrat Daniel , Hailu Asrat , Asres Kaleab
Published: June 2020

Aloe ghibensis Sebsebe & Friis is traditionally used in Ethiopia for the treatment of various ailments including skin problem, wounds and malaria. Phytochemical constituents and antileshimanial properties of the leaf latex of A. ghibensis have not been reported. The objective of this study was, therefore, to determine the phytochemical constituents and in vitro antileishmanial activities of the leaf latex of A. ghibensis and its major compounds against two Leishmania species. Preparative TLC was used to isolate compounds from the leaf latex of A. ghibensis and spectroscopic techniques including 1D- and 2D-NMR as well as ESI-MS were employed to elucidate structures of the isolated compounds. In vitro antileishmanial activity was performed against promastigotes and axenically cultured amastigotes of Leishmania aethiopica and Leishmania donovani clinical isolates using Alamar Blue assay. Phytochemical investigation led to the isolation of two major anthrones, identified as aloin A/B and 7-hydroxyaloin A/B. Both the leaf latex of A. ghibensis and isolated compounds showed antileishmanial activity with IC50 values ranging from 1.6 ± 0.43 to 3.64 ± 0.09 µg/ml and 1.87 ± 0.21 to 3.72 ± 0.12 against promastigotes and axenically cultured amastigotes of L. aethopica and L. donovani, respectively. Moreover, the test substances were found to be less toxic (LC50 = 145 ± 0.72 to 156 ± 0.08 µg/ml) than amphotericin B (LC50 = 12.11 ± 0.51 µg/ml) towards human monocytic cell line (THP-1). The present study revealed that the latex and pure compounds possess genuine antileishmanial activity with high selectivity indices (SIs). Therefore, the isolated compounds can be used as a scaffold for the development of effective drugs for leishmaniasis.
Risks and determinants of risk management strategies among rural cassava-based farmers in Imo State
Authors: Ahaneku C.E. , Onyeagocha S.U.O. , Eze C.C. , Chidiebere-Mark N.M. , Ellah G.O. , Isaiah G.I.
Published: June 2020

Cassava-based farmers are faced with a lot of risks and uncertainties and this results to low agricultural output and hinders the rural farmers from  pursuing their farming activities as an enterprise. The study assessed the risks and determinants of risk management strategies among rural cassava-based farmers in Imo State. A multistage sampling technique was used in the selection of respondents. Data were collected with the use of structured questionnaire administered to 180 respondents. Multinomial logit regression model was used to determine the factors influencing the choice of risk management strategies among rural cassava-based farmers in the study area. Results of the study showed that the farmers were of middle-age, fairly educated and have average farm size of one hectare. Majority of the farmers identified loss of crop due to disease (76.11%) and loss due to erosion (73.89%) as sources of risk farmers were exposed to. Also greater number of the respondents adopted practicing of mixed  cropping and planting of disease resistant species as risk management strategies. The result of the study also confirmed that age, gender, educational level and farm income were the major determinants of the farmers’ choice of risk management strategies. It was recommended that  government should make extension services functional and provide policies that will help boost the socio-economic welfare of farmers as this will significantly propel an increase in the choice effective risk management strategies in the area.

Keywords: Risk management, risk management strategies, cassava based farmers.
Plight of the unsung ecosystems
Authors: Stoudman Natasha
Published: June 2020

No Abstract.
Determination of thermal properties of some ceiling material commonly used in Ijebu- Ode, Nigeria
Authors: Adepitan J.O. , Ogunsanwo F.O. , Ayanda J.D. , Okusanya A.A. , Adelaja A.D. , Oni O.O. , Odumosu O.O.
Published: June 2020

The study investigates the thermal properties of different insulating material used in building construction in Ijebu Ode, a tropical rainforest region, south western, Nigeria. Five insulating material; asbestos, Plaster of Paris (P.O.P), PolyVinyl Chloride (PVC), hardboard and paperboard, were subjected to thermal investigation using Lee’s disc electrical method. The result obtained showed that the thermal conductivities obtained are within the range of values specified for good insulating materials. Asbestos was found to be associated with the least thermal conductivity of the value 𝟎. 𝟏𝟕𝟏𝟕 𝑾𝒎-𝟏𝑲-𝟏while PVC had the highest thermal conductivity values of 𝟏. 𝟔𝟒𝟗𝟗 𝑾𝒎-𝟏𝑲-𝟏. This may be associated with the temperature and the heat flux on the surface of the material. The results obtained for thermal conductivity, thermal resistivity and thermal diffusivity correlated favourably when compared with those of previous work from other locations. Asbestos being the material with the lowest thermal conductivity is therefore recommended for use as the suitable insulating ceiling material in the study area.

Keywords: thermal conductivity, diffusivity, resistivity, Lee’s disc
Application of human excreta on the farms as an effective option to the uptake and replication of ecological sanitation (Ecosan) in Burera District, Rwanda
Authors: Banamwana Celestin , Musoke David , Tumwesigye Nazarius Mbona , Ntakirutimana Theoneste , Dukuziyaturemye Pierre
Published: June 2020

The ecological sanitation (Ecosan) technology continues to be challenged by diverse factors including exposure of human excreta to the users in different geographical settings. The purpose of the study is to understand the linkage between the uptake of Ecosan technology and theapplication of human excreta on the farms among farmers in Burera district. A quantitative study was conducted to assess the linkage between the application of human excreta on the farms and the uptake of Ecosan technology among farmers of Burera District, Northern Province of Rwanda. By using a multistage sampling strategy, a sample of 361 household farmers was selected in the sectors of Rugarama, Gahunga and Cyanika in the District of Burera where the Ecosan technology has been mostly implemented at the household level Findings show that Ecological sanitation  technology is favorable among females and 70% of females prefer to use it as sanitation facilities due to its privacy and design compared to the pitlatrine technology. In addition, the application of human excreta on the farm was high and 60% of farmers apply excreta on the farmers especially when there is a time of emptying excreta from their sanitation technologies. However, only 3% of the users of Ecosan technology apply also human excreta as Ecosan products on their farms. This implies that there is a need to scale up the Ecosan technology in the community of Burera district to optimize the proper use of human excreta. The high uptake of Ecosan technology will evolve the implementation strategies such as community education, the supply of Ecosan materials in the community and the construction of Ecosan technology. This will boost sanitation coverage and increase crop production in Burera district by taking into account the community health as well as the environmental aspect
Alleviating some Environmental Impacts resulting from Artisanal and Small-scaleMining Sector: A Critical Review
Authors: Byizigiro R.V. , Biryabarema M. , Rwanyiziri G.
Published: June 2020

This paper highlights the importance of transforming Artisanal and Small-scale Mining (ASM) sector into a more sustainable enterprise and shows  the reclamation of despoiled mined sites as an opportunity to return land to beneficial uses which do not compromise future development of the sites. It presents some of environmental impacts produced by ASM and the contribution of a geomorphological approach to alleviate them. The methodology consisted of the review supported by field survey in small-scale mining areas to summarize the most relevant scientific findings and the importance of stabilizing the land that will support sustainably reclamation structures. The impacts include haphazard excavations with no land reclamation plan, pits, trenches inadequately protected, siltation of open water bodies, soil and rock wastes, negative change of soil properties, and accelerated erosion of the mine sites. To transform the sector into a more responsible industry, ASM has to be placed within two integrated perspectives: (i) building the capacity of ASM sector, and (ii) promoting restoration approach by building a critical knowledge mass through collaboration of relevant stakeholders, with emphasis on multidisciplinary approach.The study opens a relevant new research field and emphasises on the collaboration of mining stakeholders including local communities to develop an integrated approach to address challenges that ASM industry is facing in developing countries. This review highlights the impacts of small-scale mining sector on land use potentials and it is essentialcontribution towards the sustainability of ASM industry and reclamation of despoiled mined lands.

Key Words: small-scale mining sector, environmental impact, geomorphologic approach, sustainability
Vermicomposting of Food Waste Using Exotic Species of Earthworms “Eudriluseugeniae” at Mangalagangonthri
Authors: Pierre Dukuziyaturemye , Kodandoor Sharath Chandra , Naik Prashantha
Published: June 2020

A study has been conducted to assess the role of vermicomposting and carrying out plant nutrients analysis of composts delivered from food waste at Mangalagangothri campus, Dakshina Kannada District, Karnataka-India. Wastes were collected and subjected to pit- and vermi-composting using an exotic species of earthworm (Eudriluseugeniae). The composts were harvested and analyzed for macro-nutrients (N, P, K, Mg, Ca, S) by employing the standard methods. The Bioassay was conducted using PisumsativumL. plant and the data wereanalyzed statistically using SPSS.  20.Results revealed that there was highly reduction in the volume of the wastes equivalent to 30% and 20% for vermi- and pit-composting respectively. The macro-nutrients analysis showed that vermicompost had more nutrientsthan pit-compost. Based on bioassay test, the  vermicompost had the potential for improving plant growth and yield compared to pit-compost and garden soil (control). Thus, vermicompost was found to be cost-effective methods, helps in reducing food waste disposals and supplied soil with a lot of macro-nutrients compared to that of the pit-compost based on results of bioassay and nutritional parameters.

Keywords:Bioassay; Eudriluseugeniae; Food waste, Pisumsativum, Vermicompost.
A RELATIONSHIP OF STRESS LEVELS IN ELDERY WITH HYPERTENSION AT PUSKESMAS SINDANG BARANG
Authors: Sariaman Purba
Published: June 2020

Hypertension is a condition in which a person experiences an increase in blood pressure above normal in the show by a number systolik (top) and the bottom number (diastolic) blood pressure checks on the blood pressure cuff either mercury or other digital devices. This study was conducted to determine A Relationship of Stress Leves in elderly with hypertension at puskesmas Sindang Barang. This research is quantitative research and the design of this research is Analytical Study. In this study the researcher, using cross sectional approach. In this research, Statistical test results also showed that the P Value 1,000> 0.05, so the hypothesis taken by researchers rejected. So it can be concluded that there is no relationship between the levels of stress and the incidence of elderly hypertension at Puskesmas Sindang Barang. The reason why there is no significant of stress levels and the elderly hypertension at Puskesmas Sindang Barang because stress is not the only cause of hypertension. Here are many factors that can be causes a person's blood pressure, there are: lack of exercise, smoking, alcohol, caffeine, salt. The results of this study are expected to be useful as information and can enter and leave as a reference in particular complement the library where they can be useful for students. The researcher hopes that this research can be usefull as materials for the learning process as well as additional knowledge to the students of Wijaya Husada Bogor.
RELATIONSHIPS OF ADOLESCENT LEVEL ABOUT ABORTION WITH ADOLESCENT ATTITUDES TO ABORTION IN PELITA VOCATIONAL HIGH SCHOOL BOGOR
Authors: Nining Fitrianingsih Nining
Published: June 2020

dolescents in Indonesia experience pregnancy and birth before marriage reached20.9%, this figure is a fairly high and alarming. Based onthepreliminary studies on 10 female students, it was known that all female students knew about abortion through information media and 4 female students thought that abortion was dangerous but 6 other female students consideredthat abortion are normal, and the results of information obtained from the conselourteacher (BK) that there was once one student who was pregnant out of wedlock and had an abortion so that the student was expelled from school. The aims of this research areto determine the relationship of the level of knowledge of adolescents about abortion with adolescent attitudes towards abortion in students / class XI at Vocational Health Pelita Bogor in 2017. This research uses a quantitative study with a correlational design using a cross sectional approach. The populationused total sampling technique, there was 95 students of grade XI. The 95 respondents, 51 (53.7%) students had good knowledge about abortion, and 61 (64.2) positive attitudes towards abortion. Based on the statistical test results obtained p value = 0.00 which means p Value <0.05 so HO is rejected and HA is accepted, which means there is a relationship between the level of knowledge of adolescents about abortion with adolescent attitudes towards abortion in class XI in Vocational School Health Pelita District Bogor. It is expected to provide good knowledge about abortion so that it can increase knowledge about abortion and attitudes towards abortion and not fall prey to free sex which results in abortion.
THE EFFECT BETWEEN DIABETES MELLITUS DIABETES AMONG CHANGES BLOOD SUGAR LEVELS AT Dr. H. MARZOEKI MAHDI HOSPITA BOGOR
Authors: Harun Al Rasid Harun , Ami Oetami Wiharjo Ami
Published: June 2020

In 2012 diabetes mellitus is the cause of death from 1,5 million (WHO,2016). The population of diabetes mellitus (DM) in indonesia is currently ranked fifth in tyhe world. In 2013 people with diabetes mellitus in the homeland reaches 8.554.155 people. The continuous increase in the number of patients with diabetes mellitus and the magnitudeof the cost of treatment due to complications, then the best effort is prevention. Exercise of physical exercise is an early attempt to prevent, control, and overcome diabetes. Type of Quasi Experimenta research with Non Randomited Pretest and Posttest Control Group Design methods. Research location in RS Dr. H. Marzoeki Mahdi dated 26 April 2017 number of sample counted 32 respondents with diabetes mellitus with sample Purposive Sampling. Tools used in date collection are Accu-Chek Akctive and observation sheet. Technique of date analysis is bivariate analysis with SPSSM program. The influence of diabetes mellitus gymnastics on changes in blood sugar levels in Dr. H. Marzoeki Mahdi Hospital in 2017. The ntervention group of blood sugas levels before gymnastics and after gymnastics decreased 24,69 mg/dL, in the control group of blood sugar levels on the first day and the fourth day increased 10,56 mg/dL. Statistical test results using Independent T Test obtained P value = 0,000 which means P value <0,05 means the influence of diabetes gymnastics to changes in blood sugar levels in people with diabetes mellitus in Dr. H. Marzoeki Mahdi Hospital. This research is expected
THE RELATIONSHIP BETWEEN THE USE OF DRUGS REGARDING THE ARISING OF HALUSINATION IN REHABILITATION OF DR. H MARZOEKI MAHDI PSIKIATRIC HOSPITAL BOGOR
Authors: Al Muhajirin Al
Published: June 2020

Continuous use of marijuana not only makes people addicted but also damages the brain and body. The abuse of illicit drug trafficking has become a world problem that knows no national borders, it is also a global danger that threatens almost all the lives of people, nations and countries. The problem of drug abuse is worrying if it is not addressed is a threat to the welfare of future generations. Abuse of these drugs can cause interference both body and soul, followed by social consequences that are not desired. The purpose of this study was to determine the relationship between drug use and the emergence of hallucinations in the Rehabilitation of Marzoeki Mahdi Psikiatric HospitalBogor. This type of this research is an analytical survey with a cross sectional research design. The method of sampling in this study with a total sampling technique with a sample size of 200 drug users, data collection methods were obtained through questionnaires in the form of questionnaires the data analysis used univariate and bivariate. Based on the research results of the study that the 200 respondents, was found that Group I were 103 respondents (51.5%), Group II as many as 82 respondents (41.0%) and Group III users as many as 15 respondents (7.5%). for hallucinations obtained are those who experience mild hallucinations of 2 respondents (1.0%), who experience moderate hallucinations as many as 37 respondents (18.5%), and those who experience hallucinations as followed by 161 respondents (80.5%). So the conclusion is, the drug use with the emergence of hallucinations of 200 respondents, obtained from the chi square test p value = 0.012 which means p value <0.05 then Ho is rejected it means that there is a relationship of drug use with the emergence of hallucinations in Rehabilitation Marzoeki Mahdi Psikiatric Hospital Bogor.
Using a Hybrid Evolutionary Algorithm for Solving Signal Transmission Station Location and Allocation Problem with Different Regional Communication Quality Restriction
Authors: Chen Ta-Cheng , Sheng-Chuan Wang  , Wen-Cheng Tseng
Published: June 2020

This study aims to investigate the signal transmission station location-allocation problems with the various restricted regional constraints. In each constraint, the types of signal transmission stations and the corresponding numbers and locations are to be decided at the same time. Inappropriate set up of stations is not only causing the unnecessary cost but also making the poor service quality. In this study, we proposed a hybrid evolutionary approach integrating the immune algorithm with particle swarm optimization (IAPSO) to solve this problem where each of the regions is with different maximum failure rate restrictions. We compared the performance of the proposed method with commercial optimization software LINGO®. According to the experimental results, solutions obtained by our IAPSO are better than or as well as the best solutions obtained by LINGO®. It is expected that our research can provide the telecommunication enterprise the optimal/near-optimal strategies for the setup of signal transmission stations.
As vozes do progresso: os liberais positivistas na imprensa capixaba oitocentista
Authors: Silverol Siqueira Karulliny
Published: June 2020

Este artigo propõe analisar a atuação do grupo denominado Liberal Positivista na imprensa capixaba em meio ao contexto da crise do Império brasileiro. A partir dos redatores e de intelectuais adeptos ao positivismo na província destacamos as principais ideias do grupo. Por meio da metodologia das linguagens políticas, destaca-se neste estudo os conceitos mais utilizados pelos positivistas, bem como a difusão das ideias políticas liberais dentro da conjuntura de crise do Império, durante a década de 1880.
Arbitration Involving Governmental Entities
Authors: I. Garvey Jack
Published: June 2020

The paper aims to provide an overview of the main issues related to the participation of governmental entities in arbitration proceedings. First, the advantages and disadvantages of arbitration as a model of conflict resolution are analyzed. Subsequently, a number of issues of particular relevance are discussed, such as the waiver of the prerogatives of the public authorities in the drafting of the arbitration agreement, political deflection, public policy, neutrality and interagency arbitration.
A Ordem do Processo nos Tribunais no CPC-2015 e o Sistema de Precedentes: Voto Vencido, Redação de Acórdão e Colheita de Votos
Authors: Didier Jr. Fredie
Published: June 2020

O autor traz em seu texto a importância que o Código de Processo Civil brasileiro de 2015 trouxe em relação a um sistema obrigatório de precedentes.Ele indica a necessidade de releitura de alguns enunciados normativos que estavam de acordo com o código anterior e tece considerações sobre a função do voto vencido, a competência funcional para a redação do acórdão e o procedimento da colheita de votos em tribunal.
Regressividade Tributária Brasileira: Como viabilizar a redução da desigualdade gerada pelos impostos sobre o consumo?
Authors: Frimm Krieger Aline
Published: June 2020

Expõe-se, inicialmente, o contexto histórico da tributação e identificam-se as possíveis bases tributárias imponíveis. Elabora-se, então, uma análise do modelo constitucional brasileiro, demonstrando que a tributação brasileira é regressiva, em razão da expressiva carga tributária incidente sobre o consumo, o que resulta no aumento da desigualdade. Por fim, são apresentadas alternativas para reduzir a regressividade do sistema tributário brasileiro sob dois enfoques: (a) aumentar a incidência na tributação sobre a renda e (b) devolução do ICMS para a população mais pobre como forma de diminuir a regressividade do sistema.
Trinta Anos, Uma Constituição, Três Supremos: Autorrestrição, expansão e ambivalência
Authors: Perrone Campos Mello Patrícia
Published: June 2020

O objetivo deste trabalho é analisar as diferentes fases por que passou o Supremo Tribunal Federal, ao longo dos trinta anos de vigência da Constituição de 1988, no que respeita à interpretação das próprias competências e do seu papel institucional. O artigo demonstra que o Tribunal atravessou três momentos diversos: (i) uma fase inicial, no período de transição democrática, durante a qual limitou as próprias competências e se recusou a exercer parte delas (fase autorrestritiva); (ii) uma fase de expansão de tais competências, com avanço sobre o processo político e com o início do combate à corrupção, durante a qual conquistou expressiva reputação junto à opinião pública (fase expansiva); e (iii) a fase atual, de aprofundamento do combate à corrupção, com decisões ambivalentes e consumo de capital político (fase reversa)
Direito de retenção: estudo a partir da análise funcional dos remédios de autotutela
Authors: Da Guia Silva Rodrigo
Published: June 2020

Este estudo, na perspectiva de promoção de uma disciplina comum dos mecanismos defensivos de autotutela privada, parte da análise dos problemas advindos do tratamento assistemático do direito de retenção no ordenamento jurídico brasileiro. Mediante análise da jurisprudência brasileira sobre a matéria e, ainda, mediante breve confronto com a experiência normativa estrangeira, propõe-se um esboço de disciplina unitária do direito de retenção. Enfrenta-se, na sequência, a problemática atinente à suposta taxatividade do direito de retenção. Ao término do estudo, investigam-se as convergências e divergências entre o direito de retenção e a exceção de contrato não cumprido, ambos relevantes mecanismos defensivos de autotutela privada.
PARECER MJVS Nº 05/1997, DE 17 DE FEVEREIRO DE 1997
Authors: Juruena Vilella Souto Marcos
Published: June 2020

Processo Nº E-14/30285/97.Serviços jurídicos. Inviabilidade de sua terceirização para substituição do quadro funcional de entidades da administração indireta. A inexigibilidade de licitação requer a demonstração cabal da situação de impossibilidade de competição em atenção aos princípios licitatório e da continuidade. A pré-qualificação, se adotada irrestritamente para todas as contratações realizadas mediante declaração de inexigibilidade de licitação, ensejaria, com isto, burla ao princípio do concurso público, reclamando, portanto, um minudente exame pela administração pública das razões obstativas ao certame licitatório.
Uso de Sentinel-2 y datos auxiliares para la generación, mediante clasificación de imágenes, del Mapa de Usos y Cubiertas del Suelo de Cataluña 2017
Authors: González-Guerrero O. , Pons X.
Published: June 2020

This paper details the process of generating the 2017 Land Use/Land Cover Map of Catalonia (MUCSC) using automatic classification of satellite imagery and auxiliary cartographic and remote sensing data. A total of 60 images (6 dates for each of the 10 tiles covering Catalonia) captured by the Sentininel-2A and Sentinel-2B satellites were used. These images as well as texture variables, terrain models derived from lidar processing, and vegetation and wetness indices were classified using the k-Nearest Neighbor algorithm (kNN) to obtain a map with 25 categories. The categories related to urbanized areas (urban areas, urbanizations and industrial zones/ commercial areas), road infrastructures and burned areas were edited using official cartographic datasets of the Catalan Government [Generalitat]. The results have an overall accuracy greater than 98 %, which was evaluated with a set of more than 8.6 million independent test pixels. This work represents an important milestone in terms of the computational effort it involves due to the territorial extension (32 000 km2), the spatial detail of between 2 and 20 m, the use of up to 58 variables, the relative completeness of the legend and the level of success achieved. The MUCSC 2017, which is part of a 30-year quinquennial series beginning in 1987, can be downloaded in different formats (also in MMZX: new ISO 19165-2) and at resolutions of 10 m and 30 m pixel side from the Ministry of Territory and Sustainability website of the Catalan Government.
Potencial del producto SEVIRI/MSG GPP en la detección de zonas afectadas por estrés hídrico
Authors: Martínez B. , Sánchez-Ruiz S. , Campos-Taberner M. , García-Haro F. J. , Gilabert M. A.
Published: June 2020

This study aims to introduce a completely new and recently launched 10-day GPP product based on data from the geostationary MSG satellite (MGPP LSA-411) and to assess its capability to detect areas affected by water stress (hot spots). The GPP product is based on Monteith’s concept, which models GPP as the product of the incoming photosynthetically active radiation (PAR), the fractional absorption of that flux (fAPAR) and a lightuse efficiency factor (ε). Preliminary results on the use of the MGPP product in the assessment of ecosystem response to rainfall deficit events are presented in this work for a short period of three years. The robustness of this product is evaluated at both site and regional scales across the MSG disk using eddy covariance (EC) GPP measurements and Earth Observing (EO)-based GPP products, respectively. The EO-based products belong to the 8-day MOD17A2H v6 at 500 m and the 10-day GDMP at 1 km. The results reveal the MGPP product, derived entirely from MSG (EUMETSAT) products, as an efficient alternative to detect and characterize areas under water scarcity by means of a coefficient of water stress.
Bodies of Stone in the Media, Visual Culture and the Arts
Authors: Violi Alessandra , Grespi Barbara , Pinotti Andrea , Conte Pietro , Baldacci Cristina , Bertolini Michele , Bronfen Elisabeth , Cometa Michele , Damiani Sara , Farinotti Luisella , Fimiani Filippo , Grazioli Elio , Hediger Vinzenz , Maître Barbara , Luppi Anna , Malavasi Luca , Perletti Greta , Romani Silvia , Somaini Antonio , Villa Federica
Published: June 2020

If mediatization has surprisingly revealed the secret life of inert matter and the ‘face of things’, the flipside of this has been the petrification of living organisms, an invasion of stone bodies in a state of suspended animation. Within a contemporary imaginary pervaded by new forms of animism, the paradigm of death looms large in many areas of artistic experimentation, pushing the modern body towards mineral modes of being which revive ancient myths of flesh-made-stone and the issue of the monument. Scholars in media, visual culture and the arts propose studies of bodies of stone, from actors simulating statues to the transmutation of the filmic body into a fossil; from the real treatment of the cadaver as a mineral living object to the rediscovery of materials such as wax; from the quest for a ‘thermal’ equivalence between stone and flesh to the transformation of the biomedical body into a living monument.
Screen Space Reconfigured
Authors: Saether Susanne , Bull Synne Tollerud , Brown William , Bruno Giuliana , Cameron Allan , Elcott Noam , Verhoeff Nanna , Whissel Kristen , Rosa Miriam , Strauven Wanda , Pranolo Jennifer , Gunning Tom , Ross Miriam
Published: June 2020

Screen Space Reconfigured is the first edited volume that critically and theoretically examines the many novel renderings of space brought to us by 21st century screens. Exploring key cases such as post-perspectival space, 3D, vertical framing, haptics, and layering, this volume takes stock of emerging forms of screen space and spatialities as they move from the margins to the centre of contemporary media practice. Recent years have seen a marked scholarly interest in spatial dimensions and conceptions of moving image culture, with some theorists claiming that a 'spatial turn' has taken place in media studies and screen practices alike. Yet this is the first book-length study dedicated to on-screen spatiality as such. Spanning mainstream cinema, experimental film, video art, mobile screens, and stadium entertainment, the volume includes contributions from such acclaimed authors as Giuliana Bruno and Tom Gunning as well as a younger generation of scholars.
Consumption of CH3Cl, CH3Br, and CH3I and emission of CHCl3, CHBr3, and CH2Br2 from the forefield of a retreating Arctic glacier
Authors: Macdonald Moya L. , Wadham Jemma L. , Young Dickon , Lunder Chris R. , Hermansen Ove , Lamarche-Gagnon Guillaume , O'Doherty Simon
Published: June 2020

Abstract. The Arctic is one of the most rapidly warming regions of the Earth, with
predicted temperature increases of 5–7 ∘C and the accompanying
extensive retreat of Arctic glacial systems by 2100. Retreating glaciers
will reveal new land surfaces for microbial colonisation, ultimately
succeeding to tundra over decades to centuries. An unexplored dimension to
these changes is the impact upon the emission and consumption of halogenated
organic compounds (halocarbons). Halocarbons are involved in several
important atmospheric processes, including ozone destruction, and despite
considerable research, uncertainties remain in the natural cycles of some of
these compounds. Using flux chambers, we measured halocarbon fluxes across
the glacier forefield (the area between the present-day position of a
glacier's ice-front and that at the last glacial maximum) of a high-Arctic
glacier in Svalbard, spanning recently exposed sediments (<10 years) to approximately 1950-year-old tundra. Forefield land surfaces were
found to consume methyl chloride (CH3Cl) and methyl bromide
(CH3Br), with both consumption and emission of methyl iodide
(CH3I) observed. Bromoform (CHBr3) and dibromomethane
(CH2Br2) have rarely been measured from terrestrial sources but
were here found to be emitted across the forefield. Novel measurements
conducted on terrestrial cyanobacterial mats covering relatively young
surfaces showed similar measured fluxes to the oldest, vegetated tundra
sites for CH3Cl, CH3Br, and CH3I (which were consumed) and for
CHCl3 and CHBr3 (which were emitted). Consumption rates of
CH3Cl and CH3Br and emission rates of CHCl3 from tundra and
cyanobacterial mat sites were within the ranges reported from older and more
established Arctic tundra elsewhere. Rough calculations showed total
emissions and consumptions of these gases across the Arctic were small
relative to other sources and sinks due to the small surface area
represented by glacier forefields. We have demonstrated that glacier
forefields can consume and emit halocarbons despite their young age and low
soil development, particularly when cyanobacterial mats are present.
Global production networks and natural resource extraction: adding a political ecology perspective
Authors: Dorn Felix M. , Huber Christoph
Published: June 2020

Abstract. The article examines how to adapt the global production network (GPN) approach to situations of natural resource extraction. Based on an
integration of a political ecology perspective into GPN research, we
exemplarily apply the GPN framework to the primary sector. Based on
extensive qualitative fieldwork regarding Argentine lithium mining and
Brazilian soy agribusiness we illustrate that particularly a political
ecological environmental perspective allows for a more nuanced and critical
analysis of ambiguous local development outcomes. While from a purely
economic development perspective in both cases the economic activity
(integrated into GPNs) is celebrated as an imperative economic growth
driver, our framework helps identify the emergence of unilateral
dependencies, a decline of social autonomy and an unequal distribution of
environmental risks.
Las actividades cinematográficas de José y Rafael Calderón: un caso de omisión en la historia del cine regional y transnacional en México
Authors: Flores Silvana
Published: June 2020

A través de este artículo, daremos cuenta de la trayectoria de los distribuidores y exhibidores José y Rafael Calderón, provenientes del estado de Chihuahua, al norte de México, en un interés por indagar acerca de los cines regionales y transnacionales en dicho país. Partiremos de una problemática en torno a la relevancia que los estudios sobre cine han dado a los fenómenos asociados a los centros geoculturales, que en este caso nos remiten a la ciudad de México. En base a ello, evidenciaremos que aunque durante los últimos años se ha avanzado en torno a esta perspectiva historiográfica en diversas publicaciones sobre cine regional y transnacional, la figura de estos empresarios norteños ha sido usualmente omitida, aun a pesar de la gran influencia que tuvieron para el desarrollo de la industria cinematográfica mexicana en general, y de los vínculos transnacionales establecidos con Estados Unidos por medio de la fundación de salas y la distribución de cine mexicano en aquel país.
Cuando el museo se convirtió en espacio de aprendizaje. Educación y museos en Guipúzcoa en los años 80
Authors: Luna Ursula , Ibáñez-Etxeberria Alex
Published: June 2020

En los años ochenta del siglo pasado, en un contexto de cambio en España, la educación en museos alcanzó un grado de madurez que permitió recortar las distancias con los modelos educativos museísticos anglosajones. En este trabajo, se analiza esta situación en el caso de Guipúzcoa a través de 3 casos que ayudan a comprender las tendencias innovadoras y claves de aquel éxito momentáneo: museos de iniciativa social que responden a las necesidades de la ciudadanía, implicación de diferentes agentes e innovación educativa basada en metodologías activas. En los años noventa, la apertura masiva de museos y la consecuente modernización y profesionalización en los nuevos modelos de gestión y desarrollo de los museos, supondrá la pérdida de vigencia y la caída en desuso de este modelo de educación en museos, voluntario, comunitario y más artesanal, en favor de modelos más profesionales y complejos, dejándonos un romántico pequeño legado de prácticas educativas innovadoras para su época.
Creaciones y transformaciones en la onto-epistemología de los/as artistas-docentes. Un proyecto al sur de Chile
Authors: García-Huidobro Munita Rosario , Viveros-Reyes Francisca , Bahamonde-Courbis Gabriela
Published: June 2020

En Chile, los/as artistas se han introducido en las aulas y han llevado sus creaciones a estos espacios, conformando diversos tipos de proyectos educativos que trascienden el circuito artístico normalizado. Esto ha desafiado la tradicional manera de ver a los/as artistas y el rol que juegan en la sociedad actual. En este escenario, algunos autores hablan de los/as artistas-docentes para denominar proyectos que conjugan lo artístico con lo pedagógico, pero poco se ha investigado en Chile sobre cómo están ocurriendo estos procesos. De tal manera, en el proyecto FONDECYT (11180057) “Nuevos vínculos entre lo artístico y lo pedagógico. Abriendo campos hacia una reconceptualización del arte y el rol del/la artista en la sociedad actual”, se ha emprendido la búsqueda de diversos artistas-docentes chilenos que conjugan en sus proyectos lo artístico con lo pedagógico. A partir de esta indagación se encontró Impresiones del entorno a manos de estudiantes, el cual será revisado en este artículo por cuanto contempla los elementos centrales de la noción artista-docente que constituye el marco ontoepistemológico de esta investigación. Se analizan y comentan algunas características del proyecto y se concluye respecto a las potencialidades y desafíos que enfrenta el desarrollo de experiencias artísticopedagógicas para construir subjetividad.
A Comparison of the Anaerobic Power in Sub-Elite Male Racket and Futsal Players
Authors: Yaprak Yıldız
Published: June 2020

The aim of this study was to define anaerobic powers of sub-elite level racket and futsal players playing at university teams and to make comparison whether there was a difference between two groups or not. 12 racket (age: 19.83±1.02 yr) and 10 futsal players (age: 20.80±0.91 yr), 22 male players in total, voluntarily took part in this study. Body composition, Wingate anaerobic power test (WAnT), vertical jump, Illinois agility, handgrip strength and isokinetic leg strength measurements of the participants were carried out. SPSS 22.0 was used for data analysis and “Independent Samples T test” was used for comparing the data. Relative peak power (RPP) was as 12.04 W/kg, 11.41 W/kg in racket and futsal players respectively, at WAnT. And for the strength test, isokinetic extensor strength was measured as 220.61 Nm, and 217.40 Nm, isokinetic flexor strength as 134.82 Nm and 126.28 Nm. Dominant (D) and non-dominant (ND) handgrip strength measurements of the participants were detected as 51.51 kg/f and 49.58 kg/f in racket sports players, as 43.42 kg/f and 41.37 kg/f in futsal players respectively. The difference between these variables was found statistically significant only at D (p = .009) and ND (p = .004), handgrip strength parameters, the difference in other variables was not found significant. As a consequence, although WAnT, handgrip and isokinetic leg strength of racket sports players were found higher than futsal players, only the difference between handgrip strengths was statistically significant. This result showed us that there was no statistical difference between anaerobic strength parameters of racket and futsal players except for handgrip strengths.
Stimulating Academic Entrepreneurship through Technology Business Incubation: Lessons for the Incoming Sponsoring University
Authors: Lyken-Segosebe Dawn , Mogotsi Tshegofatso , Kenewang Sakarea , Montshiwa Bonolo
Published: June 2020

Universities facilitate academic entrepreneurship or their ‘third mission’ by making available supporting mechanisms such as science and technology parks, incubators, and entrepreneurship programs. Botswana’s STEM University seeks to develop a technology park in which it will commercialize the research and intellectual property developed by its faculty members, students, research centers and the country’s private sector through incubation and other processes. As a business support process, technology business incubation nurtures start-up companies and mitigates the risk of their early failure. In this enabling environment, start-ups can concentrate on technology transfer and later “hatch” or leave the incubator financially viable and self-sustaining. Pursuing academic entrepreneurship and the university-model of technology business incubation present benefits for the country, the local community and the university in terms of economic development, economic diversification, job creation, technology development, viable firms, successful products, and the enhancement of university income and prestige. However, university and faculty culture, and the extent of faculty members’ knowledge and skills in entrepreneurship and social capital may temper this potential. Utilizing a narrative review of the literature, this paper sought to identify critical issues a newly-participating university should be aware of as it seeks to adopt the university-model of business incubation to facilitate its transformation from a primary focus on its traditional research and teaching missions to one also based on the formal commercialization activities characterizing academic entrepreneurship. The paper informs on approaches the university may adopt to encourage academic entrepreneurship among its faculty members.
Ocorrência de enteroparasitos em escolares no município de Bandeirantes, Paraná, Brasil
Authors: Almeida Thayany Magalhães de , Ogawa Liza , Melo Simone Cristina Castanho Sabaini , Otomura Flávio Haragushiku
Published: June 2020

O objetivo deste trabalho foi avaliar a ocorrência de enteroparasitos em escolares do 6º ao 9º ano de uma escola de rede pública de ensino do município de Bandeirantes, Paraná, e abordar ações educativas na prevenção dos parasitos intestinais. As amostras fecais foram processadas pelos métodos de sedimentação espontânea, centrífugo-flutuação em sulfato de zinco a 33% e Kato-Katz modificado. Para análise da associação dos resultados e os dados obtidos do questionário epidemiológico foram realizados os testes de qui-quadrado (?2), exato de Fisher e razão de chances (Odds Ratio-OR), com nível de significância de 5%. Das 112 amostras fecais analisadas, 9,8% (11/112) foram positivas para algum enteroparasito. Em 10 amostras foi constatado monoparasitismo para os seguintes parasitos: Giardia sp 36,3% (4/11); Entamoeba coli 27,3% (3/11); Iodamoeba butschlii 9,1% (1/11); Endolimax nana 9,1% (1/11) e Enterobius vermicularis 9,1% (1/11). O poliparasitismo foi observado em apenas uma amostra, com Endolimax nana e Iodamoeba butschlii. Não foram observadas diferenças significativas (p> 0,05) entre as variáveis associadas aos resultados das análises de fezes. As ações educativas abrangeram 88,9 % (273/307) dos escolares. Os parasitos E. coli, I. butschlii e E. nana, apesar de serem comensais ao trato intestinal humano, são indicadores de falha na higiene pessoal, já que o seu mecanismo de transmissão se dá pela via fecal-oral. Contudo, apesar da baixa frequência encontrada, pode se observar que há circulação por parasitos intestinais na população em estudo, fortalecendo a importância de ações educativas no papel da prevenção, que auxiliam na higienização pessoal e dos alimentos de forma adequada