bluuebunny/crossref_metadata_2025_split huggingface dataset:
La grounded theory : un cadre propice pour interroger la pertinence scientifique de la ligne éditoriale de la RISO
Authors: Kamdem Emmanuel , Nekka Hadj 
Published: March 2020

Le potentiel de développement des théories en sciences de gestion ne fait plus désormais aucun doute quels que soient les terrains d’investigation, y compris africains (Assens et Nekka, 2019 ; Chevalier et Kamdem, 2019 ; Kamdem, 2019 ; Biwolé Fouda, Causse et Ngantchou, 2018). Dans cet article, nous visons deux objectifs. Le premier consiste à expliquer pourquoi les recherches mobilisant les théories managériales ou plus largement en sciences sociales pour en faire la critique à partir des terrains africains sont différentes mais complémentaires des recherches relevant de la grounded theory. Le deuxième objectif consiste à préciser comment la grounded theory peut, cependant, contribuer à hausser la qualité de la recherche africaine en gestion. Dans cet article, la GT est discutée comme une voie de dynamisation de la recherche africaine en nous aidant à préciser comment le projet de développement des connaissances de la RISO a de beaux jours devant lui.
Gouvernance communautaire et pérennité des Institutions de Micro Finance au Cameroun : le cas du réseau MC² (Mutuelle Communautaire et Croissance)
Authors: Nzongang Joseph , Takoudjou Nimpa Alain 
Published: March 2020

Les Mutuelles Communautaires de Croissance (MC²), Institutions de Micro Finance (IMF) de première catégorie à vocation essentiellement rurale, ont été créées pour desservir les populations de ces zones exclues du système bancaire classique. Le dynamisme et la viabilité de ce réseau d’IMF ouvrent des perspectives de recherche fécondes, notamment sur les facteurs explicatifs de leur pérennité. La présente étude a pour objectif de montrer en quoi le mode de gouvernance des MC², adapté aux spécificités culturelles d’une région constitue un facteur de pérennité. À partir d’une démarche qualitative, nous avons effectué des entretiens auprès de 14 IMF, âgées de plus de 15 ans dans la région de l’Ouest du Cameroun. La pérennité des IMF de ce réseau est bâtie sur un mode de gouvernance coopérative dont la réussite dépend des contingences culturelles fortes de la région, d’un système « garde-fou » permanent assuré par des structures d’appui sur les plans techniques et financiers et d’une organisation fondée sur des initiatives endogènes auto-gérées et auto-contrôlées.
Concevoir et écrire pour la réalité virtuelle : nouvelles compétences, approches et techniques de scénarisation
Authors: Morriet Oriane 
Published: March 2020

La réalité virtuelle bouleverse les pratiques scénaristiques des créateurs des œuvres réalisées à l’aide de ces technologies. Partant, elle entraîne des mutations de leurs compétences, leurs approches et leurs techniques de création. Elle redynamise aussi les relations qu’ils entretiennent avec les autres professionnels de l’industrie : les réalisateurs, les producteurs et les distributeurs, notamment. Dans notre article scientifique, nous proposons un bilan des nouvelles compétences, approches et techniques de scénarisation des scénaristes des œuvres en réalité virtuelle afin de mieux saisir ce que signifie concevoir et écrire pour ce médium.
The relationship between renal sinus lipomatosis detected at abdominal computed tomography and abdominal visceral and subcutaneous fat accumulation and metabolic risk factors
Authors: Yalçın Kadihan , Elibol Özlem 
Published: March 2020

PurposeTo investigate the relationship between renal sinus lipomatosis (RSL) and abdominal visceral and subcutaneous fat accumulation and metabolic risk factors.Material and methodsA total 73 subjects were included in the study. The study group consisted of 35 cases with RSL and 38 control cases matched for age and sex. Total, visceral, and subcutaneous abdominal fat areas were measured by abdominal computed tomography (CT). The relationship between RSL and visceral abdominal fat, subcutaneous abdominal fat, total abdominal fat, high total cholesterol level, high low-density lipoprotein (LDL) cholesterol level, high very low-density lipoprotein (VLDL) cholesterol level, high triglyceride level, low high-density lipoprotein (HDL) cholesterol level, impaired fasting glucose level, type 2 diabetes mellitus, hypertension (HT), and metabolic syndrome (MS) were investigated.ResultsRSL existence was observed at significantly higher levels statistically in cases with low HDL cholesterol level, high LDL cholesterol level, high VLDL cholesterol level, high triglyceride level, high total cholesterol level, and high glucose levels. In the presence of MS, DM, and HT, the presence of RSL was at a significantly higher level according to the statistics. Logistic regression analysis was performed to examine the factors affecting RSL presence together.
It was observed that the model formed as the result of the evaluation using the backward method is statistically significant. Furthermore, the variables of age, high total cholesterol level, high glucose level, and abdominal subcutaneous fat were included in the obtained model.ConclusionsOur study demonstrated an association between the presence of RSL and age, high total cholesterol level, high glucose level, and subcutaneous fat.
Lipid Profile in School Children Infected with Urinary Schistosomiasis in Fante Akura-Yeji, Ghana
Authors: Brenyah Ruth. C. , Boakye Cephas Effah , Oduro Enos Amoako , Quarshie Solomon Sosu , Kwadzokpui Precious Kwablah , Abaka-Yawson Albert 
Published: March 2020

Background: Schistosomiasis remains one of the most common parasitic diseases worldwide causing considerable deaths especially among people in the Sub-Saharan region. This study determined the association between urinary Schistosomiasis and lipid profile among school children in Fante Akura, Yeji.
Materials and Methods: This simple randomized case-control study was conducted among 50 primary school students with Schistosoma haematobium infection and 50 healthy control students in Fante Akura, Yeji, from January, 2014 to March, 2014. Urine and blood samples were obtained and examined for the presence of S. haematobium and assessed their lipid profile respectively. A structured questionnaire was employed to obtain information from the study participants on their socio-demographic characteristics as well as on the risk factors that can predispose study participants to S. haematobium infection.
Results: The mean serum level of low-density lipoprotein cholesterol (LDL-C) was reduced significantly in schistosome-infected participants in comparison to controls (P<0.001). The mean serum levels of triglyceride (TG) (p=0.028), LDL-C (p=0.011) were significantly higher in participants with light S. haematobium infection intensity compared to participants with heavy S. haematobium infection intensity (P=0.028). The mean serum level of total cholesterol (TC) and high-density lipoprotein cholesterol (HDL-C) were higher (P>0.05) in participants with light SH infection intensity compared to participants with heavy SH infection intensity.
Conclusion: S. haematobium infection presented significant changes in serum levels of total cholesterol, triglycerides and low-density lipoproteins in participants infected with S. haematobium with a corresponding raised urine parasite count.
Kell Blood Group Antigens Not Found in Indigenes of Ogoni Ethnic Group of Rivers State, Nigeria
Authors: Christian Serekara Gideon , Eze Evelyn Mgbeoma , Ezimah Anthony Chijioke Uzoanya , Buseri Fiekumo Igbida 
Published: March 2020

Aim: The aim of the study was to determine the frequency of occurrence and percentage distribution of Kell blood group antigens in indigenes of Ogoni ethnic group of Rivers State, Nigeria.
Study Design: This was a cross-sectional study carried out among indigenes of Ogoni whose first generational parental origin is Ogoni. A total of 101 subjects (49 females and 52 males), within the age of 30–60 years were recruited for the study and they were apparently healthy and free from transfusion transmissible infections upon serological screening.
Place and Duration of Study: Ogoniland is located in an area along the Niger Delta Eastern edge, and to the north-east of the Imo River and Port Harcourt city. Ogoniland covers about 1036 Sq Km and borders the Bay of Guinea. All participants were recruited in Bori. Bori is the traditional headquarter of Ogoni. Bori is located on latitude: 4040ʹ34.64ʺ N and longitude: 7021ʹ54.68ʺ E. The analysis was carried out at the Post Graduate Laboratory of Rivers State University, Nkpolu-Oroworukwo, Port Harcourt, Rivers State, Nigeria. Port Harcourt, the capital of Rivers State, is located on latitude 4.750N and longitude 7.000E and lies along Bonny River in the Niger Delta. All subjects were recruited the same day and their blood samples collected on 2nd October, 2019, and analysis conducted on 3rd October, 2019.
Methodology: Identification of Kell blood group antigens was done using Anti-Kell monoclonal reagent, prepared by Lorne Laboratories Ltd, UK. Lot No: 76090-A5; Expiry Date: 2021/02/21. Phenotyping of red cells was done using tube method as described by Lorne Laboratory Ltd.
Results: The result showed zero frequency of occurrence and percentage distribution of Kell blood group antigen in the studied population (49 males and 52 females).
Conclusion: The presence of Kell blood group antigens in indigenes of Ogoni recruited for the study which serve as representative of the Ogonis was rare. It is therefore necessary to take into cognizance that haemolytic transfusion reactions due to Kell antigens and antibodies will rarely occur, and as such Kell blood group is not significant in blood transfusion and in antenatal and blood group serology amongst the Ogonis.
Effect of Harvesting Stages on Seed and Oil Yield of Rapeseed-mustard to Suitable in a Cropping Pattern
Authors: Talukder A. H. M. Motiur Rahman , Biswas Mrityunjoy , Miah Mohammad Noor Hossain , Kashem M. A. , Nahar Lutfun 
Published: March 2020

Aim: To find out the optimum harvesting stage of high yielding rapeseed-mustard varieties to fit in rice based cropping pattern.
Study Design: The field study was arranged following RCB (factorial) design with three replications.
Place and Duration of the Study: Agronomy field of Regional Agricultural Research Station, Jamalpur (located between 24°34ʹ and 25°26ʹ North latitude and 89°40ʹ and 90°12ʹ East longitude), Bangladesh during 2015-2016 and 2016-2017.
Methodology: Seeds of mustard varieties viz. BARI Sarisha-11, BARI Sarisha-14, BARI Sarisha-15, Binasarisha-4 & Tori-7 were sown in line maintaining 30cm spacing on 02 November, 2015 and 06 November, 2016. This varieties were harvested at four different harvesting stages viz. H1= Green stage of siliquae, H2= Pale yellow stage of siliquae, H3= Golden yellow stage of siliquae and H4= Full maturity stage of siliquae. Green stage of siliquae was determined just at seven to ten days after all flower droppings of crop while the pale and golden yellow stage of siliquae was determined when 40%-50% and 70%-80% bearing turned into light yellow and deep yellow in color respectively. Full maturity stage of siliqua was determined when lower bearing just brust out.
Results: BARI Sarisha-14, BARI Sarisha-15 (B. campestris) and Binasarisha 4 (B. napus) may be harvested at pale yellow stage of siliquae at 73, 82 and 78 DAS (average of two years) considering 11.0% seed and 3.15% oil yield; 10.0% seed and 1.56% oil yield; 6.60% seed and 3.90% oil yield loss respectively than full maturity stage of siliquae.
Conclusion: BARI Sarisha-14, BARI Sarisha-15 and Binasarisha 4 need to be sown within first week of November in districts named Mymensingh (located 24°15′ and 25°15′ N and 90°49′ E longitudes), Jamalpur (located 24°34ʹ and 25°26ʹN latitude and 89°40ʹ and 90°12ʹ E longitude) and Tangail (located 24°01′ and 24°47′ N latitudes and 89°44′ and 90°18' E longitudes) and the crop should be harvested at pale yellow stage of siliquae (within 73-82 days period) sacrificing seed and oil yield loss to some extent to introduce HYVs of rapeseed-mustard in rice based cropping pattern.
Charter Market Segmentation in Response to Trade’s Needs
Authors: Plomaritou Evi , Menelaou Angelos 
Published: March 2020

Chartering is the part of international shipping business which broadly deals with the proper matching of cargoes’ transport needs and vessels’ commercial trading. Different charterers have different transportation needs. They do not all require the same sea transport service and not all charterers charter a particular vessel for the same reasons. Therefore, this paper intends to present how the charter market may be structured in response to trade’s needs and charterers’ requirements. The main objective of this paper is to constitute an overview of the shipping market segmentation into the various market segments. The analysis is based on the behavioural segmentation approach. This paper discusses mainly the conditions of charter market segmentation through relevant theories, reviews and some real cases analyses. Segmentation involves homogeneous buying behaviour of charterers within a segment but heterogeneous buying behaviour between segments. In respect of the trade’s needs, emphasis is given on charterers’ requirements in bulk market (dry and liquid) and on shippers’ requirements in liner market.
Furthermore, the paper examines how the shipping companies should respond to their clients’ demands. Shipping enterprises have unique capabilities concerning the means, the resources and the management abilities for their ships. The matching of the shipping enterprise capabilities with the needs and the desires of its clients is fundamental for the provision of the desired transport services, the satisfaction and retention of charterers and thus the commercial success of the enterprise. Main objective of charter market segmentation is to assist the company focus its efforts to the most promising opportunities.
Effect of Intervention Training on Pharmacists’ Knowledge and Attitude to Antibacterial Counselling
Authors: Michael Adeola Adebisi , Omole Kayode M. , Itiola Oludele Adelanwa. 
Published: March 2020

The effectiveness of counselling patients on antibacterial rational use by pharmacists depends on their knowledge and attitude to counselling.This study evaluated the effect of intervention training on pharmacists’ antibacterial therapy knowledge and attitude to counselling.
It was a cross-sectional questionnaire-based study among all the pharmacists (n=45) responsible for patients’ antibacterial counselling in seventeen government secondary health care institutions in Ogun state of Nigeria between November 2017 and May 2018. Identified deficits were addressed through intervention and re-assessment was carried out after a month.
Twenty four (53.3%) were females. Twenty one (46.7%) had hospital pharmacy experience of over 10 years and mean year of experience was 10.7±6.7. Sixteen (35.6%) and 36 (80.0%) believed that antibacterial resistance may be prevented by taking antibacterial medication at regular intervals at the baseline and post intervention phases respectively. Thirty three (73.3%) and 44 (97.8%) had the opinion that pharmacists and patients are active participants in effective antibacterial counselling at the two phases respectively. Twenty eight (62.2%) and 44 (97.8%) had scores ≥ 70.0% signifying good knowledge pre and post intervention respectively.
Disclosure of antibacterial identity to patients was believed to be necessary by thirty six (80.0%) and 43 (95.6%) while 27 (60.0%) and 43 (95.6%) exhibited positive attitude to antibacterial counselling at the two phases respectively. There was significant improvement in antibacterial knowledge and attitude to counselling (p < 0.001) post intervention. Regular antibacterial therapy and counselling training is hereby recommended for pharmacists.
Phototaxis: Microbial
Authors: Storey Claire , Allan Claire Y , Fisher Paul R 
Published: March 2020

AbstractPhototaxis is light‐regulated movement of motile organisms (microorganisms in the case of microbial phototaxis), usually resulting in their attraction to (positive phototaxis) or avoidance of (negative phototaxis) illuminated regions. Bacteria and archaea often use a time‐biased random walk strategy – choosing directions randomly, but moving for longer time periods in the chosen direction if it happens to be correct. They use various photoreceptors, including xanthopsins, bacteriophytochromes and sensory rhodopsins to sense light, and two‐component histidine kinase‐mediated phosphotransfer systems to regulate movement. Eukaryotic microbes, by contrast, can respond to the direction of light by regulating the direction of movement. Their phototransduction pathways involve protein serine/threonine protein kinases and regulation by second messengers. Representative organisms from each of the three taxonomic domains whose photosensory signal transduction pathways have been studied. Many components of the signal transduction pathways controlling phototaxis have been identified, but much remains to be elucidated.Key ConceptsPhototaxis enables microorganisms to position themselves in an environment that is optimal for survival.Organisms from all three taxonomic domains display phototaxis with differing photosensory signal transduction pathways.Photosensory signal transduction pathways in eubacteria and archaea involve the coupling of signals from photoreceptors to the same signalling pathways as are used by these organisms for chemotaxis.Phototransduction pathways in archaea and bacteria involve two‐component signalling systems that phosphorylate/dephosphorylate proteins at histidine and aspartate residues.Phototransduction pathways in eukaryotic microbes appear to involve protein phosphorylation/dephosphorylation at serine or threonine residues, and the responsible kinases and phosphatases are regulated by second messengers.
Sexual Deception in Orchids
Authors: Rakosy Demetra 
Published: March 2020

AbstractSexual deception has evolved repeatedly within the Orchidaceae. All species exploit the sexual communication system of insects; they rely on a combination of olfactory, visual and tactile signals for tempting mate‐searching males into copulation attempts with their flowers. The exploitation of their pollinator's private communication channel ensures a highly effective pollen transport between conspecific flowers. Despite the elaborate pollination mechanisms deployed by sexually deceptive orchids, their annual reproductive success is notoriously low. This has fuelled intensive research into the evolutionary mechanisms which have given rise to sexual deception. Existing evidence support the hypothesis that these orchids have traded high reproductive output for higher quality seed production. But other factors may also be involved. While their evolution remains shrouded in mystery, their diversification has been revealed to be linked to repeated pollinator shifts mediated by the malleability of their floral traits. Despite decades of research, sexual deception still poses unanswered questions.Key ConceptsSexually deceptive orchids rely on mimicking the chemical, visual and tactile cues used by female insects to attract mate‐searching males. The mimicry is highly accurate, making it difficult for males to distinguish between their conspecific females and the orchid flowers.Sexual deception is a highly specific pollination system; each orchid being usually pollinated by a single pollinator species.The specific pollinator attraction is mediated by the same combination of flower traits in most sexually deceptive species. The sexual pheromone analogue produced by the flowers is thereby the key trait involved in ensuring specific pollinator attraction.Flower colour and morphology can also play a crucial role in pollinator attraction and in ensuring that the pollinators will contact the reproductive structures of the flowers.Despite their elaborate pollination strategies, sexually deceptive orchids are notorious for their low reproductive success. Low fruiting success seems, however, to be compensated by the production of high‐quality seeds through higher outcrossing rates than their food deceptive relatives.It is still debated how and why sexually deceptive orchids evolved from their food‐deceptive ancestors. There are multiple hypotheses which could explain the evolution of sexual deception, but a clear pattern has not yet emerged.Despite their low reproductive success, sexually deceptive orchids seem to be evolutionary highly successful. Their diversification has been linked to repeated pollinator‐shifts driven by often minute changes in their sexual pheromone analogues, followed by subsequent alterations of their flower colour and morphology.
Solvent Engineering Using a Volatile Solid for Highly Efficient and Stable Perovskite Solar Cells
Authors: Wu Guohua , Li Hua , Cui Jian , Zhang Yaohong , Olthof Selina , Chen Shuai , Liu Zhike , Wang Dapeng , Liu Shengzhong (Frank) 
Published: March 2020

AbstractA strategy for efficaciously regulating perovskite crystallinity is proposed by using a volatile solid glycolic acid (HOCH2COOH, GA) in an FA0.85MA0.15PbI3 (FA: HC(NH2)2; MA: CH3NH3) perovskite precursor solution that is different from the common additive approach. Accompanied with the first dimethyl sulfoxide sublimation process, the subsequent sublimation of GA before 150 °C in the FA0.85MA0.15PbI3 perovskite film can artfully regulate the perovskite crystallinity without any residual after annealing. The improved film formation upon GA modification induced by the strong interaction between GA and Pb2+ delivers a champion power conversion efficiency (PCE) as high as 21.32%. In order to investigate the role of volatility in perovskite solar cells (PSCs), nonvolatile thioglycolic acid (HSCH2COOH, TGA) with a similar structure to GA is utilized as an additive reference. Large perovskite grains are obtained by TGA modification but with obvious pinholes, which directly leads to an increased defect density accompanied by a decline in PCE. Encouragingly, the champion PCE achieved for GA‐based PSC device (21.32%) is almost 13% or 20% higher than those of the control device or TGA‐based device. In addition, GA‐modified PSCs exhibit the best stability in light‐, thermal‐, and humidity‐based tests due to the improved film formation.
Pyridines Bearing Poly(ethylene glycol) Chains: Synthesis and Use as Ligands
Authors: Satou Motoi , Kiyooka Arata , Tsuji Yasushi , Fujihara Tetsuaki 
Published: March 2020

AbstractA series of pyridine ligands bearing poly(ethylene glycol) (PEG) chains at theparaposition was synthesized and characterized by NMR and ESI‐HRMS analysis.1H NMR analysis showed that pyridines coordinate to Pd(OAc)2even when a long PEG chain is attached to the pyridine ring. In the Pd‐catalyzed oxidation of alcohols, the pyridines bearing longer PEG chains were found to be efficient ligands.