Natural & Applied Sciences

Research Papers/Topics Natural & Applied Sciences

Evaluation Of Antimicrobial And Antioxidant Properties Of Tanzanian Honey From Two Agro-Ecological Zones

ABSTRACT A study was conducted to assess the quality of Tanzanian honey based on antioxidant properties and antimicrobial activities on bacteria and fungi in relation to its physicochemical properties. Two types of honey samples (stinging and stingless bees’ honey) were collected from central zone (Singida and Dodoma) and western zone (Tabora and Shinyanga). Honey samples were analysed for anti-microbial activities, anti-oxidant properties (total phenols, vitamin C) and physico-chemical pr...

A Study of Bovine Babesiosis in El-fasher - North North Darfur State - Sudan

This study was conducted from September 2017 to March 2018 in Elfasher locality –North Darfur State, to identify Babesia species and tick infected cattle and to measure some hematological and biochemical parameters associated with bovine babesiosis. A total of 227 whole blood were collected from Elfasher locality [Elfasher veterinary hospital, Elfasher slaughter house, and cattle farms in Elfasher ]. For identification of Babesia using thin smear Giemsa stain. Packed cell volume was ...

Determination Of The Level Of Expression Of Oscipk15 Salt Responsive Gene In Selected Tanzanian Rice Landraces

ABSTRACT This was an experiment to determine the presence and level of expression of OsCIPK15 salt responsive gene in Tanzanian rice breeders’ lines. Abiotic stress is one of the factors affecting rice cultivation in Tanzania. The calcineurin B- like protein interacting protein kinases (OsCIPKs) responsive genes have been observed to express in abiotic stress. The calcineurin B- like protein interacting protein kinases-15 (OsCIPK15) salt responsive gene, which is usually a silent gene expr...

Effect Of Drying Methods And Beheading Of Dried Sardines On Nutritional, Microbiological And Sensory Qualities

ABSTRACT The purpose of this study was to determine the effect of drying methods and beheading of dried sardines on nutritional, microbial and sensory qualities. Fresh sardines from Lake Victoria were dried by three different solar drying methods (solar dryer, rack and ground). Dried sardine from each drying methods were divided in two portions (whole body and beheaded part). Analytical samples were analysed using AOAC and ISO standard methods for nutritional and microbial qualities. Both sa...

A Comparative Study of Different Methods for Determination of Selenium in Some Sudanese Fruits, Soil and Water

This study aimed to measure concentration of selenium (Se) in five Sudanese fruits: Ziziphus spina christi (Nabaque); Adansonia digitata (Tabaldi);Balanites egyptiacea (Laloub); Grewia tenax (Gudeim) and Tamarindus indica (Aradeb). Se concentration was also measured in soil where the plant grows from different depths (75 cm ,100 cm and 150 cm). Also water sample was taken from nearby (Hafeer) to determine Se concentration. All samples were collected according to Standard Method of Sampli...

Factors Influencing Aflatoxin Contamination In Maize At Harvest And During Storage In Kongwa District, Tanzania

ABSTRACT The factors influencing aflatoxin contamination in maize at harvest and during storage in three villages of Manungu, Mlanga and Kongwa in Kongwa district, Dodoma region, Tanzania, were investigated in the year 2015/2016. The villages were chosen as they were major maize producers and suppliers to the international Kibaigwa grain market located in this area. The number of maize samples analyzed were 91. Twenty three samples were taken during harvest and stored for 90 and 180 days in ...

Comparative Study of the Growth and Yield of Three Cultivated Pleurotus Species on Selected Tropical Trees Sawdusts

ABSTRACT The quest to boost dietary protein production from readily available and affordable sources is ever increasing in developing countries. The indigenous edible Pleurotus species (oyster mushrooms), which grow naturally on wood wastes, are potential protein supplements. However, little information is available on the usage of selected tropical trees for optimum mushroom cultivation. Therefore, this research was designed to investigate the growth and yield of oyster mushrooms on sawdust...

Pub Network 106 PAGES (27873 WORDS) Botany Thesis
A Comparative Study between Processed and Foam Purified Gum Arabic Var. Senegal

Physicochemical properties of Acacia Senegal var Senegal gum purified by foaming and processed gum (ELNsr) samples were studied. The results showed that the moisture content, ash, nitrogen, protein, viscosity, specific optical rotation and pH were (10.74% and 10.86%), (3.84% and 3.55%), (0.25% and 0.27%), (2.35% and 2.30%), (14.5 cm3g-1 and 14.8 cm 3g-1 ), (-33.61° and -30.75°) and (4.9 and 4.5)] respectively. The gum produced by foaming consists of arabinose (33%), rhamnose (13.5...

Computational Chemistry Study on the Corrosion Inhibitor Performance Of 1,3,4-Oxidizole Derivatives Against The Corrosion Of Mild Steel In Chloric Acid

The objective of this research is to use computational chemistry through the study of three heterocyclic compounds of 1,3,4-oxidizole derivatives. Quantum chemical calculations based on density function theory (DFT) method were performed on three nitrogen-bearing heterocyclic compounds used as corrosion inhibitors for the mild steel in acid media to determine the relationship between the molecular structure of inhibitors and inhibition efficiency. The structural parameters, such as ener...

Assessment of High Sensitive C-reactive Protien of Hepatitis B in Sudanese Patients in Khartoum State

Background CRP was the first acute phase protein to be described and is sensitive systemic marker of inflammation and tissue damage especially in liver disease . hepatitis B viruses Is a common health problem throughout the world and one of the major risk factors for liver disease. General objective: To assess High Sensitive C-reactive protien of Hepatitis B in sudanese Patients In Khartoum State. Specific Objective:   To assess CRP levels an study Group   To correlate between C...

Study of the Major Flavonoids from Balanites aegyptiaca, Cissus petiolata and Hegeina abyssinica

In this study, phenolic compounds were extracted from roots of Balanites aegyptiaca, seeds of Hagenia abyssinica and roots of Cisuss petiolata using 95% ethanol. The crude ethanolic extracts of the studied species were subjected to paper chromatography. In this way compound I was isolated from the roots of Balanites aegyptiaca. The structure of this isolate was elucidated by a combination of spectral techniques (UV, IR, NMR and MS) and the following tentative structure was proposed:

Screening For Foot And Mouth Disease Virus In Buffaloes And Cattle In Selected Livestock-Wildlife Interface Areas Of Tanzania

ABSTRACT Rapid and accurate diagnosis is paramount in understanding the infection status of foot and-mouth disease (FMD) virus (FMDV) in animals. In this study, the singleplex real time RT-PCR (qRT-PCR) assay employing the Callahan 3DF-2, 3DF-R primers and Callahan 3DP-1 probe were used in screening for FMDV genome on esophageal– pharyngeal (OP) fluids. The OP samples were collected from cattle and African buffaloes in livestock-wildlife interface areas of Mikumi, Mkomazi and Ruaha Nationa...

Tri-linear Soft Couplings Running in Five Dimensional Minimal Super-symmetry Standard Models

In this dissertation, we derived the Renormalization Group Equations (RGEs) for five dimensional Minimal Super-symmetric Standard Model (MSSM) plus additional fields . We found a successful unification of gauge coupling constants in this model very close to: GeV. Yukawa couplings seemed to be tending to unify at some high scale and approximately vanish beyond the unification scale of the gauge couplings, i.e. GeV. We showed that a five dimensional (5D) MSSM with compactification scale o...

Influence of Extraction Methods on Thermal Properties and Antimicrobial Activity of Moringa peregrina Seeds Oil

The aim of the present study was to investigate the effect of extraction methods on the thermal properties and the antimicrobial activity of Moringa peregrina seeds oil. The oil was extracted by cold pressing (CP) and maceration in n hexane (MH). The yields of the oils were 9.12% % and 21.87% respectively. Except the peroxide value, the chemical properties of the oil extracted by the two methods remained fairly unchanged. Additionally, the results have revealed that the oil which was ex...

Twistor Formulation of Some Partial Differential Equations

Twistor theory has been invented by R. Penrose in order to generalize gravity. He introduced a geometrical model for Minkowski space. This geometrical setup has been generalized in solving particle differential equations. In particular zero-rest-mass field equation have been treated this way as a Contour integral of complex twistor function. In our study we consider geometrical interpretations and solutions of conformal field equations. We also studied Twistors in curved space-time and ...


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