bluuebunny/crossref_metadata_2025_split huggingface dataset:
Effet de la phytoaccumulation du plomb, du fer et du zinc sur deux Poacées dans la zone de Kribi et de ses environs
Authors: Ondo Benjamin Obiang , Ntyam Sylvie Carole Ondo , Priso Richard Jules 
Published: October 2020

Le défi de préservation de la biodiversité reste pertinent en zones côtières notamment à Kribi, où la démographie galopante s’accompagne d’un accroissement notable des polluants. Pour appréhender les effets des métaux lourds dans le métabolisme de quelques macrophytes de Kribi, 4 sites de collecte des échantillons ont permis d’identifier deux Poacées, Panicum maximum et Echinochloa colona. Avec une température moyenne d’eau de 25,25 ± 0,17 °C, n = 16; l’on constate la sensibilité thermique des feuilles de E. colona par rapport à P. maximum. Le site kribi plus acide (pH = 4,16 ± 0,02) contient aussi plus de plomb (1,04 ± 0,01 mg/l). Corrélée au taux de chlorophylle et au nombre de feuilles de P. maximum, la quantité de chlorophylle accumulée et le nombre de feuilles diminuent avec l’augmentation du plomb. Ce métal provoque la chlorose foliaire, des lésions nécrotiques et le dessèchement du feuillage pour ces deux Poacées. Le fer s’observe plus dans le cours d’eau Bidou et augmente avec le taux de chlorophylle de P. maximum. La variation moyenne du zinc dans l’étude est de 0,11 mg/l. L’accumulation du zinc empêche le développement de feuilles de P. maximum.
Mots clés: Chlorophylle, Kribi, métaux lourds, Poacées, polluants.

English Title: Effect of phytoaccumulation of lead, iron, zinc on Poaceae in Kribi and its surroundingsThe challenge of preserving biodiversity in the context of modernization of industries remains relevant in coastal areas, especially in Kribi, where demography is galloping while pollutants increase. To control the effects of heavy metals in the metabolism of some macrophytes in Kribi, four sample collection sites were identified with two Poaceae, Panicum maximum and Echinochloa colona. With an average water temperature of 25.25 ± 0.17 °C, n = 16; the thermal sensitivity of E. colona leaves is found in relation to P. maximum. The more acidic Kribi site (pH = 4.16 ± 0.02) also contains more lead (1.04 ± 0.01 mg/l). Correlated with chlorophyll and leaves of P. maximum, the amount of chlorophyll accumulated and the number of leaves decrease with increasing lead. This metal causes leaf chlorosis, necrotic lesions, yellowing and foliage drying, for these two Poaceae. Iron is observed more in Bidou stream and increases with maximum P. chlorophyll. The average variation of zinc in the study is 0.11 mg / l and the accumulation of zinc prevents the development of P. maximum leaves.
Keywords: Chlorophyll, heavy metals, Kribi, Poaceae, pollutants.
Etude par la chaîne de valeur de la filière d’exploitation de Bagrus spp. dans la partie congolaise des Lacs Albert et Edouard
Authors: Masirika Joseph Matunguru , Mukabo Gabriel Okito , Kasereka Patrick Kiyani , Jariekong’a Jonas Uvon , Tulinabo Gaston Hamulonge , Micha Jean-Claude , Ntakimazi Gaspard , Nshombo Venant Muderhwa 
Published: October 2020

La filière d’exploitation de Bagrus spp. occupe une place importante dans l’économie aux lacs Albert et Edouard. Sa durabilité est compromise par les inégalités dans la distribution des revenus. Cette étude visait à analyser la chaîne des valeurs et d’examiner l’ensemble des coûts financiers le long de cette chaîne afin de déterminer le lieu, les valeurs ajoutées et la contribution relative des différents acteurs à la lumière de l’organisation de la filière et du type de gouvernance qui régit les rapports entre les acteurs. Des enquêtes ont ciblé les acteurs de six chaînes de valeur. Celles-ci ont été choisies sur la base du produit (la nature du marché, de la localisation géographique et du degré d’enclavement). Les principaux résultats sont de trois types de chaînes de valeur : domestique, globale et mixte. Le modèle de gouvernance le plus fréquent s’apparente à un “réseau dirigé”. Le pêcheur est le principal générateur de valeur mais ce sont les mareyeurs et commissionnaires qui dominent la filière et captent la plus grande partie des revenus.Mots clés : Chaîne de valeur, Bagrus spp., gouvernance, rentabilité, lac Edouard, lac Albert.
English title: Study by the value chain of the exploitation sector of Bagrus spp. in the Congolese part of Lakes Albert and Edouard

The Bagrus spp. operating chain plays an important role in the economy of lakes Albert and Edouard. Its sustainability is compromised by inequalities in the distribution of income. This study aimed at analyzing. This study aimed to analyzing the value chain and all the financial costs occurring along this chain in order to determine the location, the added values and the relative contribution of the different actors in the light of the organization of the sector and the type of governance that governs relationships between actors. Surveys have targeted actors in six value chains. These were chosen on the basis of the product (the nature of the market, geographic location and degree of isolation). The main results concern three types of value chains: domestic, global and mixed. The most common governance model resembles a "directed network". The fisherman is the main generator of value, but it is the wholesalers and commission agents who dominate the sector and capture most of the income.Keywords: Value chain, Bagrus spp., governance, profitability, lake Edouard, lake Albert
Role of Radio in Improving Livelihoods: The Case of Central Broadcasting Services’ Project to Empower Women in Savings and Loan Associations in Nsangi Sub-County, Wakiso District, Uganda
Authors: Nangooba Margaret B 
Published: October 2020

This study investigated Central Broadcasting Services’ Project to Empower Women in Savings and Loan Associations (CBS-PEWOSA) in Nsangi sub-county, Wakiso district, Uganda. Data was gathered from members of the associations using questionnaires, key informant interviews and focus group discussions. The findings showed that the project has increased awareness about and knowledge of solutions to community development problems ranging from culture, rural development, education, and women empowerment to agriculture. Communities have been mobilized to form groups, save and borrow to invest in Small and Medium Enterprises, which has led to improvements in their livelihoods. However, illiteracy, resistance to new ideas, under funding and limited airtime allocated to development programs on the radio are constraining the project. Recommendations for the improved effectiveness of the project are made.
Keywords: Media; Radio; CBS PEWOSA; Livelihoods
Helminth Parasites of Anurans from Zaria, Northern Guinea Savannah Zone of Nigeria
Authors: Anele E.U , Nock I.H , Gadzama I.M.K 
Published: October 2020

Helminth parasitc infections were investigated in 150 Anurans collected in parts of the Northern Guinea Savannah during thedry and wet seasons of 2016. The Anurans that were investigated included Amietophrynus regularis, Kassina senegalensis,Afrixalus vittiger, Xenopus tropicalis, Xenopus fischbergi, Pyxiecephalus cf. edulis, Hoplobatrachus occipitalis, Amniranagalamensis and Ptychadena pumilio. Overall prevalence of helminth parasites was 64% (94/150). Seven species ofhelminths belonging to three taxonomic classes were recovered: Monogenea 4%, Trematoda 19.33% and Nematoda 40.67%were identified. Eupolystoma alluaudi (30%) was the only monogenean recorded from the bladder of S. regularis. Tematodesfound were Diplodischus fishthalicus (53.49%) and Haematoloechus micrurus (67.45%) from the rectum and lungs of H.occipitalis, respectively. Nematodes included Camallanus microcephalus from the oesophagus and small intestine of X.fischbergi ( 62.96%) and X. tropicalis (100 %), respectively, Camallanus dimitrovi (25.58%) from the small intestine andrectum of H. occipitalis, an unidentified nematode from the oesophagus and small intestine of X. fischbergi (1.85%) and X.tropicalis (33.33%), and an Aplectana (85.00%%) species from the small intestine and rectum of S. regularis. Except forEupolystoma alluaudi, the infestation level was generally low. Parasite prevalence was higher during the wet (39.33%) thandry (24.67%) season and the difference was not significant (p = 0.17). The prevalence and infection intensity were lower thanthose reported from anurans in southern biotopes of Nigeria. The occurrence of Camallanus macrocephalus is a new recordfor Nigeria, while X. fischbergi and X. tropicalis are new host records for C. macrocephalus.
Keywords: Anurans, helminth, prevalence, Northern Guinea Savannah, Nigeria
Prevalence and diversity of Gastro-intestinal parasites in captive wild animals in Northern Nigeria.
Authors: Kamani J , Msheliza E.G , Yidawi J.P , Sada A , Turaki U.A , González-Miguel J 
Published: October 2020

Copro-parasitological survey of 217 captive wild animals belonging to 17 orders from northern Nigeria was conducted.Faecal samples were collected from the wild animals in zoological gardens in four states and analysed using the flotation andsimple sedimentation techniques. Overall, parasite eggs or cysts were detected in 47% (n=102) of the animals examined.High parasite prevalence, 80%, 75%, 71%, 60 % and 50% were recorded for members of the orders Testudines,Perissodactyla, Artiodactyla, Primates and Rodentia respectively. Multiple infections involving two or three parasite taxawere recorded in some of the captive wild animals examined with a significant association (p<0.05) between the animals andnematode eggs, Taenia eggs and Eimeria oocysts. Others helminth species such as Ascaris, Hookworm, Enterobius,Entamoeba, Trichuris and Strongyloides were also detected. This calls for caution as the wild animals may serve as source ofinfection to attendants and visitors to the zoos.
Keywords: parasites, zoonoses, ecology, conservation, wildlife, Nigeria
Molecular Detection of <i>Trypanosoma species</i> in Cattle Slaughtered at Zango and Yantukwane Abattoirs in Zaria, Kaduna State, Nigeria
Authors: Isa I , Salim L , Kamba B 
Published: October 2020

African animal trypanosomoses constitute the most important vector-borne cattle diseases in Sub-Saharan Africa. A total of170 blood samples were collected from cattle in Zango abattoir and Yantukwane abattoir in Zaria, Kaduna State. BloodSamples collected were examined for the presence of trypanosomes using the buffy coat technique and Giemsa thin bloodsmears which shows a single 1(0.58%; 1/170) infection using microscope. Positive and negative samples were subjected tofurther analysis using nested PCR reaction with nested primers for detection of trypanosomes, and 9 of the samples showedpositive bands after gel electrophoresis at 998bp (lane 1-9) indicating the presence of Trypanosoma theileri. Percentage, Chisquareand Odds ratio were used to analyse the data. A total of 9(5.29%; 9/170) animals were found infected with the parasiteout of which 4(4.65%; 4/85) were found in Zango abattoir, while 5 (5.95%) were found in Yantukwane abattoir. The resultswere not statistically (P>0.05) location dependent. The infection in male (6.45%) cattle was higher than the female (4.63%)with no infection in young animals. No infection was observed in Sokoto Gudali breed, while White Fulani breed had 5.77%.From this study, it is clear that trypanosomosis is still a major obstacle to livestock production in Zaria and its Environs andthe incidence is majorly in adult cattle. In addition, nested PCR reaction showed more sensitivity than microscopy. Hence,there is need for proper diagnosis and treatment of animals to promote more beef and milk production for humanconsumption. Further study is necessary to determine the pathogenicity of T. theileri in other domestic animals.
Keywords: Trypanosomosis, White Fulani, Sokoto Gudali, breed, infection.
Prevalence of Diabetes Mellitus in a Rural, Agrarian Community in South-South Nigeria
Authors: Egbi Oghenekaro Godwin , Ahmed Sulaiman Dazumi 
Published: October 2020

Background: Diabetes mellitus (DM) is a global public health threat, often associated with other co-morbidities with significant morbidities and mortality. The aim of this study was to determine the prevalence of DM in a rural agrarian community in Nigeria.Methodology: This cross-sectional study, using quantitative methods, was carried out in Ayua community in Etsako West local government area of Edo state, South-South Nigeria. Structured questionnaire was intervieweradministered while socio-demographics, anthropometric data, blood pressure and weight measurements as well as random blood glucose were obtained from participants.Findings: Two hundred and sixteen participants (58 males, 158 females) completed the study with a mean age of 54.2+16.4 years. Diabetes was found in 30 (13.9%) participants and undiagnosed in 40.0% while hypertension and obesity were found in 61(28.2%) and 57(26.4%) respectively. Diabetes was independently predicted by age > 50 years (OR = 5.7) and the presence of a family history of DM (OR = 43.0) with p < 0.001 each) but not by obesity (p=0.860), hypertension (p = 0.477) or family history of hypertension (p = 0.09).Conclusion: Considering the high prevalence of DM and co-morbidities in this rural agrarian community, we recommend regular screening of adults for these conditions.
Keywords: Diabetes mellitus, Hypertension, Nigeria, Rural
Assessment of Markers of Depression and CD4 Cell Count among Adult HIV-Positive Patients on Anti-Retroviral at a Nigerian University Teaching Hospital
Authors: Amoko A. , Ajiboye P.O. , Olagunju F.A. , Shittu R.O. 
Published: October 2020

Objective: Depression is a common mental health problem among people living with HIV/AIDS (PLWHA); because low count of lymphocytes with cluster of differentiation 4 (CD4 cell count) is associated with severe symptoms of HIV infection, there are thoughts that low CD4 cells count can provoke depressive illness. This study was conducted to determine the relationship between CD4 count and depression among adult HIV positivepatients attending Family Medicine clinics at University of Ilorin Teaching Hospital (UITH), Ilorin, Nigeria.Method: A hospital based descriptive cross-sectional study was done over a period of 6 months among 350 systematically randomly selected adult HIV-positive patients. PHQ-9 was used to obtain information on depression and the CD4 count was determined using a flow-cytometric method. Data were obtained and analyzed using SPSS-17. Chi-square was used to determine degree of association between the depression and the level of CD4 count. P-value of < 0.05 was considered statistically significant.Results: The prevalence of depression among the respondents was 33.4%. The prevalence of depression was highest among respondents with low CD4 count (≤349cells/ul), 37.0%, and least among those with high CD4 count (≥500cells/ul), 28.3%. This relationship was however not statistically significant.Conclusion: The overall prevalence of depression was high among the respondents (33.4%) suggesting the need for routine depression screening among HIV positive patients. There was no statistically significant association between presence of depression and level of CD4 count (p-value=0.302).
Keywords: Depression, CD4count, PLWHA, Family Medicine, UITH.
Discusión de una propuesta de doctorado profesionalizante en Educación Matemática
Authors: Flores-Medrano Eric , Hernández Rebollar Lidia Aurora , Sánchez-Ruiz José Gabriel 
Published: October 2020

En este artículo se presenta una investigación documental sobre la formación permanente del profesorado de Matemáticas a través del estudio de posgrados. La distinción entre posgrados académicos (para la investigación) y profesionalizantes (para incidir en campos de trabajo) se ha venido manejando desde hace varios años y en distintos países. Contextualizamos la discusión a partir del caso brasileño, enfatizando en el caso de PROFMAT como ejemplo de máster profesionalizante. Discutimos los principales retos que se han detectado en la generación de este tipo de programas de posgrado y presentamos las bases y fundamentos de una propuesta de doctorado profesionalizante en Educación Matemática en México. Entre los principales resultados, destacamos la potencialidad que tiene en el diseño de programas el uso de un modelo de conocimiento con énfasis en las Matemáticas y la consideración de las características del profesor experto como metas alcanzables.
Association of vitamin D levels with preeclampsia
Authors: Sana Shahid  , Asma Ladak  , Syeda Sadia Fatima  , Fatima Abid Zaidi  , Sabah Farhat  
Published: October 2020

Abstract
Objectives: This study was aimed to assess maternal vitamin D status during pregnancy and determine the association between maternal 25(OH) D levels with risk of preeclampsia (PE).
Methods: A cross-sectional study was conducted with 172 pregnant women recruited from JPMC between January and December 2017 who were divided as normotensive (n=80) and pre-eclamptic (n=92) groups. Blood pressure was recorded at 20 and 32 weeks of gestation. Five ml of blood sample was collected at 20 weeks of gestation to assess the vitamin D levels by commercially available ELISA assay.
Results: PE group had a significantly higher systolic (p<0.001) and diastolic (p<0.001) blood pressure at 20 weeks of gestation. Vitamin D levels were reported to be significantly lower (p<0.001) in the PE group (17.97±9.38 ng/ml) as compared to normotensive group (42.18±25.17 ng/ml). A strong negative correlation of Vitamin D levels with systolic blood pressure (r=-0.428; p<0.001) and diastolic blood pressure (r= -0.375; p<0.001) was found.
Conclusion: This study found a strong relationship between low vitamin D levels and pre-eclamptic manifestation.
Keywords: Vitamin D; Pre-eclampsia; Pregnancy; Hypertension.
Continuous....
Sensing parameters as a function of the chemical structure and thickness of two poly(styrene)-type based composites with carbon black
Authors: Dehonor Márquez Ethnice , Vigueras Santiago Enrique , Hernández López Susana , Ramirez Jimenez Alejandro 
Published: October 2020

Sensing parameters of polymer composite layers were studied as a function of the polymer matrix structure and the initial resistance of the composite layers. Composites of Poly(styrene) and 4-Chloro-poly(styrene) at the same volume fraction of carbon black (8.7% V/V) were prepared by ultrasonic dispersion. Composite layers with different thicknesses and resistances were deposited by spin coating technique on flexible substrates from commercial cellulose acetate foils. Both kind of composite layers with initial resistances of 10, 50 and 100 k? were exposed to Acetone, Tetrahydrofuran, Chloroform and Toluene. Results evidenced that selectivity is very dependent on the chemical structure of the polymer matrix and sensitivity to the initial film electrical resistance. PS-based composite series were selective to Tetrahydrofuran whereas that 4ClPS-based composite series were selective to Acetone as expected due to their solubility parameters. For both composite series sensitivity increased for layers with less than 100 k? resistances. For all tested solvents 4ClPS-based composites showed higher sensitivities than PS-based composites. The response times for both series were into the range of 2 to 150 s and recovery times were in the range of 30 to 2000 s.
Abrasion resistance analysis of coatings at electro-arc spraying using a pulsating spraying airflow
Authors: Zakharova Iryna 
Published: October 2020

Abstract. In the global practice of application, more than 50% are metal coatings applied by the method of electric arc metallization, which has the following advantages: high productivity, simplicity of equipment, low power consumption, the ability to 6obtaining coatings with high-performance properties through the use of scarce and inexpensive wires of industrial production.
But the main drawback is the process of oxidation of alloying elements during transportation of molten electrode particles by spraying airflow.
A series of scientists' works are aimed at improving the design of spray heads of electric arc metallizers, which involves improving the design of the air nozzle through the use of inserts and devices providing a change in the spraying airflow, and leads to a significant increase in the price of the process.
To reduce the oxidizing effect of the spraying airflow on the liquid metal of the electrodes the method of pulsating air injection into the electrode melting zone has been developed.
This paper presents the influence of the pulsating spraying flow on the indicators of abrasive wear and reduction of oxidation of metal particles, at the arc metallization to obtain coatings with the specified properties and application of resource-saving.
Sobre escRITOS mitopoéticos, percursos mitodológicos e palavras-chave para abrir presença nas páginas
Authors: Machado de Aguiar Franciele , Pedroso de Oliveira Luane 
Published: October 2020

O texto experimenta e reflete acerca dos modos de escrita das pesquisas das autoras — que investigam processos de criação de dramaturgias e poéticas e pedagogias vocais. Em jogo de escRITOS, buscam modos de pesquisa e escrita de pesquisa mitodológicos, inspirados nas ressonâncias míticas da imaginação. Esses escRITOS contemplam, ainda, a experiência em formas comumente colocadas às margens daquelas consideradas “oficiais” na escrita acadêmica, como as cartas, a poesia, a ficção. Traçando nas páginas as palavras e imagens ditadas pelos afetos e ritmos de seus corpos em trabalho de criação, as autoras buscam também constituir e cartografar poéticas e pedagogias feministas no contexto da cena.
Níveis inatos de C3 e C4 em pacientes com leishmaniose visceral tratada e associação com os aspectos clínico-laboratoriais
Authors: Pelloso Ana Rubia Alcantara , Aguiar Amanda Aparecida Silva de , Fernandes Paloma Barbosa , Lopez Luis Fernando Baldino , Carneiro Luiz Euribel Prestes , Peresi Lordelo Eliana 
Published: October 2020

<p><strong>Introdução</strong>: assim que inoculada pelo flebotomíneo, a Leishmania entra em contato com o sistema complemento, sendo que poucos<br />estudos têm avaliado os níveis inatos dos componentes iniciais C3 e C4. <strong>Objetivo</strong>: avaliar os níveis inatos dos componentes C3 e C4<br />do sistema complemento em pacientes curados de leishmaniose visceral (LV) e sua associação com aspectos clínico-laboratoriais no<br />momento de diagnóstico da doença. <strong>Metodologia</strong>: foram estudados 29 pacientes com LV curada. Os níveis de C3 e C4 séricos foram<br />dosados pela técnica de imunodifusão radial simples, após um tempo médio de 59,48 meses pós-tratamento, formados os grupos:<br />C3: baixo (&lt; 84 mg/dl; n=10), normal (84 a 193 mg/dl; n=14) e elevado (&gt; 193 mg/dl; n=5); C4: muito baixo (&lt; 20 mg/dl; n=10), baixo (20 a 40 mg/dl; n=15) e normal (&gt; 40 mg/dl; n=4). Os dados clínicos e laboratoriais empregados para as análises foram coletados<br />por levantamento dos prontuários, considerando o período de diagnóstico da doença de cada paciente. <strong>Resultados</strong>: foi observada<br />uma correlação positiva fraca entre os níveis de C3 e C4 (rho=0,46; p=0,01). Verificou-se que a maioria dos pacientes sintomáticos<br />no momento do diagnóstico apresentavam níveis inatos normais de C3 e baixos de C4. Pacientes com C3 baixo apresentaram<br />maiores níveis do hematócrito em relação ao grupo C3 normal (p=0,0406). <strong>Conclusão</strong>: conclui-se que o componente C3 do sistema<br />complemento está associado às alterações do hematócrito, sugerindo o acompanhamento dos seus níveis em pacientes com LV.</p>