January 2021

HBc antibody seroprevalence in HBs negative antigen blood donors at the Chad National Blood Transfusion Center in N’Djamena

The aim of this study is to assess the risk of hepatitis B transfusion in negative HBsAg blood donors who test positive for anti HBcAb. From January to December 2019, an observational study of virological markers was carried out with blood donors (family and volunteers) at the National Blood Transfusion Center in N’Djamena. The donors included were also tested negative for the markers (Ab anti HCV, HIVAg/Ab and...

Author(s): Djimadoum Mbanga,, Nadlaou Bessimbaye, Mayanna Habkréo, Georges Doumdé and Nicolas Barro

January 2021

Prospective study of dental implantology related patents in Brazil

Technological innovation and the development of new products is what currently boost the competitiveness between enterprises and moves the economy. The technical-scientific advances in Dentistry grow each day and there are great investments by research centers and universities in new materials, especially in dental implantology. The objective was to evaluate the patents deposited and granted in implantology at the...

Author(s): Lídia Audrey Rocha Valadas, Rosueti Diógenes Oliveira Filho, Carlos Eduardo Francischone, Mara Assef Leitão Lotif, Mary Anne Medeiros Bandeira, Marta Maria de França Fonteles, Taynã Coelho Simões, Francisco Josimar Girão Júnior, Ana Cristina de Mello Fiallos and Carlos Ricardo de Queiroz Martiniano,

January 2021

Biotreatment of water samples from Itakpe iron mining site, Kogi State, Nigeria using Bacillus species

Four soil samples and water effluents each within the mining environment were tested in this study. Twenty six bacteria were isolated using nutrient agar and acidified nutrient agar. Gram staining and endospore staining were carried out to determine the Bacillus species used for bioremediation. Speciation of the microorganisms using 16S rRNA sequencing showed the organisms to be Bacillus cereus NK1, Lysinibacillus...

Author(s): Ogunnusi T. A., Adu A. O. and Oyinloye J. M. A.  

January 2021

Screening of maize germplasm for resistance to maize lethal necrosis disease in Zambia

Maize is an important staple crop for humans and livestock feed in Zambia. A total of 473 maize germplasms were screened under maize lethal necrosis (MLN) artificial inoculation and disease pressure using an alpha lattice design to identify potential tolerant varieties as sources of resistance.  The analysis of variance (ANOVA) based on the MLN score range of 1-9 showed that the levels of MLN resistance in the...

Author(s): Mathias Tembo, Kabamba Mwansa, Kayombo Kambukwe, Victoria Ndeke, Dickson Ng’uni, Lubasi Chibwe, Cosmos Magorokosho and Lingadahali Mahabaleswara Suresh

January 2021

Use of mineral salts to remove recalcitrance to somatic embryogenesis of improved genotypes of cocoa (Theobroma cacao L.)

Some improved genotypes of cocoa tree (Theobroma cacao L.), have shown in standard study conditions of absence or a very low response to the induction of somatic embryos. This is the case of the recalcitrant genotypes C8 and C15, partially recalcitrant genotypes C14 and C16. This study aims to improve the production of somatic embryos of recalcitrant genotypes. Staminodes and petals excised from the immature buds of the...

Author(s): Daouda Koné, Oulo N’Nan-Alla, Kan Modeste Kouassi and Kouablan Edmond Koffi