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Volume 59, Issue 331, July 2023

About the Cover

ReviTec is an innovative technology of soil restoration established in Cameroon in 2012 by the Bremen-based Partnership Cooperation. The experiment was conducted to evaluate the effectiveness of this technology to restore hardés soils in northern Cameroon. Two monitoring periods were scheduled (2015 and 2016) inside and outside of ReviTec. Some parameters of soil (pH, texture, moisture, soil compaction) and vegetation (herbaceous percentage coverage and tree growth (bio volume)) were evaluated inside and outside of ReviTec. Results indicated that substrate filled in ReviTec biodegradable bags (compost, biochar, mycorrhiza, silt, etc.) influences soil pH and texture positively. pH and texture respectively remain acidic and silty loam outside of ReviTec (on hardé) whereas inside of the ReviTec site, pH became alkaline and texture changed into sandy clay loam. During the both monitoring periods, the percentage of soft soils (ss) and semi-soft soils (sss) were always significantly higher in ReviTec site than outside respectively 44.44% ss, 42.60% sss, 12.96% hs inside of ReviTec site and 2.08% ss, 19.80% sss and 78.12% hs outside of ReviTec in 2015 and 53.70% ss, 31.50% sss, 14.81% hs inside ReviTec site and 5.20% ss, 20.83% sss, 73.96% hs outside of ReviTec in 2016. Percentage coverage of herbaceous species was higher inside ReviTec site (almost 100% near structures) than outside during each monitoring period and bio volume of trees was almost the same

Table of Contents

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SCIENCE

Assessment of the efficiency of ReviTec technology for soil restoration in sudano-sahelian part of northern Cameroun: Case of Hardé soils of Maroua-Salak

Michaël Zirted Jourmbi, Daniel Toumba, Idrissou Danmori, Bruno Olivier Rouama Paggo, Arafat Gové

ReviTec is an innovative technology of soil restoration established in Cameroon in 2012 by the Bremen-based Partnership Cooperation. The experiment was conducted to evaluate the effectiveness of this technology.

Discovery, 2023, 59(331), e84d1274

Abstract | PDF

Mean displacement law for black body radiations and temperature of electromagnetic waves

Ganesa Moorthy C, Udhaya Sankar G

Wien’s displacement law was derived from mode value of the very old Planck’s distribution for black body radiations. One more new displacement law is derived from mean value of the Planck’s distribution, by evaluating two integrals.

Discovery, 2023, 59(331), e85d1279

Abstract | PDF

Evaluation of environmental impact of e-waste dumpsite on heavy metal composition of selected vegetables

Odoh CC, Chukwuma EC, Ajiwe VIE

Electronic waste (e-waste) has emerged as a global environmental challenge because of its massive production volume, insufficient management policy in many countries and associated health risk.

Discovery, 2023, 59(331), e86d1280

Abstract | PDF

Effects of dietary supplementation of Prosopis africana (African mesquite) essential oil on the growth performance, nutrient retention and oxidative stress indices of broiler chicken

Alagbe JO, Agubosi OCP, Oluwafemi RA

This research was undertaken to evaluate the effects of dietary supplementation of Prosopis africana essential oil on the growth performance, nutrient retention and oxidative stress indices of broiler chickens.

Discovery, 2023, 59(331), e87d1283

Abstract | PDF

Reactions of the 2,5-pyridine dicarboxylic acid (dicarpy)-bridged iron (III) dimer, [Fe((saloph))2-μ-dicarpy], with β-mercaptoacetic acid and β-mercaptoethylamine in aqueous perchloric acid

Pius O Ukoha, Clara O Anidobu, Uchechukwu R Obeta, Uchechukwu S Oruma

Kinetics of the reduction of [(Fe(saloph))2-μ-dicarpy] by ̀β-mercaptoacetic acid and β -mercaptoethylamine was followed spectrophotometrically at 424 nm. The reactions were conducted at pseudo-first order conditions.

Discovery, 2023, 59(331), e88d1284

Abstract | PDF

Response of wheat to different application doses of Diammonium Phosphate

Muhammad Subhan, Muhammad Mujahid Akbar, Mumtaz Hussain, Dilawar Hussain, Sumaira Gull, Nabeel Arshad, Mohsin Iqbal, Shakeel Ahmad, Muhammad Feroz, Noor Ud Din

This study aimed to investigate the impact of various dosages of diammonium phosphate (DAP) on the growth and production of wheat crops. The experiment was conducted using a randomized complete block design.

Discovery, 2023, 59(331), e89d1293

Abstract | PDF

Africa informal technology sector borrowing principles, concepts, theories, techniques and methods from other sectors

Wangai Mambo

Informal sector artisans require actionable guidance that is provided by theories and techniques whose strengths and weakness are known, yet the informal sector faces resource scarcity which makes it nearly impossible.

Discovery, 2023, 59(331), e90d1285

Abstract | PDF

Effect of canal sediments and farmyard on Wheat (Triticum aestivum L.) yield and yield components at El Multaga Area, Northern State (Sudan)

Ali Abdalla Mohammed, Imran Ali Ahmed, Amar Wedaa Hamad, Hbiballa Abdelhafiz

Study was conducted for two successive winter seasons; 2020/21 and 2021/22, at the Research Farm of the National Institute of Desert Studies (RFNIDS), New Hamdab Scheme, Northern State of Sudan.

Discovery, 2023, 59(331), e91d1288

Abstract | PDF

ENGINEERING

Reliability analysis of mobile air compressor component of air hose

Ukpaka CP, Orukwowu Umejuru, Nkoi B

The air hose failure as a component of Mobile Air Compressor (MAC) was monitored in the operation of Obrikom gas plant for a period of four years and downtime, mean time between failure, failure rate, reliability.

Discovery, 2023, 59(331), e92d1290

Abstract | PDF

MEDICINE

Accuracy of lateral scapular slide test and modified lateral scapular slide test in smartphone users with scapular dyskinesia: A cross-sectional study

Apoorva Andhare, Neha Gotmare

Background: Lateral Scapular Slide test (LSST) and Modified Lateral Scapular Slide test (MLSST) are used to evaluate scapular dyskinesia. Aims: To find out the accuracy of the LSST and MLSST in Smartphone users.

Discovery, 2023, 59(331), e93d1275

Abstract | PDF

SOCIAL SCIENCE

Twenty-first-Century effective principles for successful urban Christian missions in Nigeria

Akinyemi Oluwafemi Alawode, Rev Ishaya Adamu Jangado

The twenty-first Century Church faces many challenges in doing urban Christian missions, such as a need for a strategic plan to carry out effective Christian missions in Nigerian cities.

Discovery, 2023, 59(331), e94d1277

Abstract | PDF

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