The goal of the present work is study of sorption properties of carbonaceous materials obtained from cellulose-based waste products by technology worked out by the authors of the present article and determination of the possibility of their use for purification of drinking and waste water contaminated with coblt- ions. Carbonaceous materials were obtained by thermal conversion under various conditions from secondary raw materials (Hazelnut shells, Walnut shells). Based on the work done, it can be concluded that among the carbonic materials (hazelnut and walnutshells) obtained from cellulose-containing secondary raw materials, the carbon material of the hazelnut shell has a good adsorption capacity against cobalt ions. The maximal adsorption and extraction rate (per 1 g of adsorbent from 100 ml of solution) of cobalt ions is achieved at a solution concentration of 0.0025 M and a pH of 3 ÷ 5. These materials can be used for fine water purification from cobalt salts.

The performance of sodium chloride, potassium ferricynaide and potassium ferrocynaide cathodes on bioelectricity production was evaluated in dual chambered microbial fuel cell (MFC).The three MFCs with sodium chloride, potassium ferricynaide and potassium ferrocynaide cathodes were operated separately to elucidate the difference in power generation potential and chemical oxygen demand value. Effective power generation of magnitude 25223.880mW/m² for 24 hours and 31380.597mW/m² for 48 hours was noticed for fuel cell operated with sodium chloride cathode. Maximum power yield of value 9.125 (W/Kg COD_R) for 24 hours, 11.36 (W/Kg COD_R) for 48 hours and current density of 970.149 (mA/m²) for 24 hours and 1082.090 (mA/m²) for 48 hours were recorded at 100 ? resistor for sodium chloride cathode. The Chemical Oxygen Demand (COD) value was observed to decrease.

The present study of this article aimed to estimate the concentration level of some heavy metals ( Pb, Mo, Ag, Ba, Zn, Cu) in the streets of Sana'a city Yemen. The results showed differences in the concentrations of these elements between the locations and within the locations for the studied samples as well among the coefficients also showed an increase in the concentration of zinc and lead Pb in most of the locations, while the lowest concentration of Ag and Ba elements was in all locations, and these concentrations fall within the local and global limits recommended for heavy metals in the soil and plant leaves. While the concentration of heavy metals varied within the locations, the highest concentration of Pb at the site of 1 (Mathbah bridge) was 0.047 ppm, while the lowest site is 0,000 for a number of elements and in a number of locations. The present research will be helpful to explore the concentration of some heavy metals in the street trees as an indicator of air pollution in Sana'a City at ROY, and the metallic Toxic from non-living components of some heavy metals in the soil and trees of some of the capital's streets (Sana'a).

Honey is produced by honeybees from the nectar of flowers or from secretions from the living parts of plants. The sample of honey bee was collected nearby tulsi, bael, neem, coconut, amla and sunflower cultivated region.  Bees collect and transform this material with their own specific substances before storing it and leaving it to mature in separate honeycombs. In this experiment, honey is characterized for its nutritional quality having tremendous bioactive components role. The bioactive component includes sugars, enzymes, lactones, wax, pigments, vitamins, amino acids, minerals, organic acids and pollen. The environmental parameters was also observed which seems to reflect the quantity and quality of honey. Cluster analysis was also done to evaluate the nature and quantity of bioactive components in selected hot spot regions. Its chemical composition varies according to the type of plants cultivated nearby honey bee culture. Thus, the objective of this study was to identification and characterization of bioactive component having therapeutic potential value against several health disorders of humans, and hence we evaluate the bioactive components of honey collected nearby different cultivated crops of different locations having strong medicinal background.

Tungstophosphoric acid catalyzed kinetics of oxidation of p-chloro and p-methyl benzhydrols by N-bromoisonicotinamide (NBIN) in aqueous acetic acid medium have been carried out. The oxidation kinetics of p-chloro and p-methyl benzhydrols by N-bromoisonicotinamide (NBIN) in presence of TPA (Tungstophosphoric acid) shows a first order dependence on [NBIN], [TPA] and fractional order on [substrate]. The variation of ionic strength, added concentrations of salts viz. KCl and NaCl, H⁺ and isonicotinamide (reaction product) have insignificant effect on reaction rate. Activation parameters for the reaction have been evaluated from Arrhenius plot by studied the reaction at different temperatures.

This research work was attempted to study the effect of ultrasonic treatment on emulsion stability such as emulsion stability index (ESI), creaming index and particle size of coconut milk. Coconut milk was sonicated at different ultrasound frequencies (20, 30 and 40 KHz), treatment time (5, 10 and 15 min) and fat content (8, 10 and 12 %) and analysed using Box Behnken statistical design under response surface methodology. The optimum emulsion stability was achieved with 20 Khz ultrasound frequency, 15 min treatment time and 10% fat content. It was found that the acoustic energy is responsible for fat globule reduction due to energy cavitation and high pressure shock waves. It was also observed on increasing the ultra sound frequency the acoustic energy density (AED), emulsion stability and creaming index are increased while particle size is reduced. The stable coconut milk gave the result as AED, ESI, creaming index and particle size as 4.14 KJ/100 ml, 32.54 min, 15.9 % and 106.53 nm, respectively.

Plant tissue culture refers to the sterile, in vitro cultivation of plant parts stem node, shoottip & root such as organs, embryos, and seeds, as well as single cells on either solidified or liquid nutrient media. These cells have the ability to divide and differentiate into a whole plant. The first experiments, though unsuccessful, were initiated in 1902 to culture plants through in vitro propagation. The first true plant tissue cultures were successfully conducted in 1939 when undifferentiated tissues of carrot were continuously cultured for prolonged periods. Plant tissue culture offers many practical benefits. Scientists are able to promote the mass propagation of desirable plants through in vitro cultivation.  Plants usually propagated by seed can now be cultured in vitro to yield thousands of identical plants; a number of agronomically important plants, such as the oil palm in the tropics, have been successfully propagated by large-scale cloning. Specific characteristics such as disease and herbicide resistance also can be selected for while plants are in culture. .Regenerating flowering plants in culture offers an additional advantage: there are no viruses in cells of meristematic regions - regions of plant tissue made up of cells that divide to give rise to the tissues and organs of flowering plants