Abstract Cellulosimicrobium cellulans (C. cellulans) was isolated from radioactive wastes and identified by Biological examination. The investigation of the removal thorium aqueous solutions carried out using living dead C. cellulans. biosorption studied different ion concentrations. Electron microscopic examinations both before after ions were done to locate sites metal find difference between bacterial cells. obtained results showed that could sorp 151.94 220.56 mg/g, respectively. kinetic...

Abstract The field behaviour and bionomics of the red palm weevil (RPW) Rhynchophorus ferrugineus (Olivier) have been demonstrated. microclimatic temperature conditions where insects live were recorded monthly (August–February). insect lives in a microhabitat with temperatures much lower compared to outer sunny atmosphere during summer. During winter, minimum daytime was 12°C 16.1°C atmosphere. Records microclimate infected trees always higher those healthy ones, difference 1–2°C. A high...

Polyaromatic hydrocarbon contamination is considered as serious pollution resulted from industrial activities.Physical or chemical methods used for remediation of hydrocarbons might cause the transfer remediated compounds polluted sites into other clean locations.Our study concerned by bioremediation phenanthrene, using microbial degraders that will eventually, result in release non-toxic structures, end products.Successfully, three bacterial isolates; Enterobacter cloacae, Bacillus sp. and...

Abstract The interaction between Plodia interpunctella Hbn., parasites and predators Bacillus thuringiensis Berl. has been investigated. Experiments with the parasite Bracon brevicornis Wesm. previously fed during larval instar on treated host larvae of P. , showed significant reduction in egg production. incubation duration were not affected except at highest concentration (500 μg). Percentage formed cocoons was significantly reduced all tested concentrations. longevity either sex, other...

Abstract Investigations were conducted to quantify the effects of treatment cracked wheat, Triticum aestivum L. (Gramineae), kernels with sublethal and median-lethal concentrations Bacillus thuringiensis Berliner 1915 (Eubacteriales: Bacillaceae) on energy use by Plodia interpunctella (Hübner) 1813 Tribolium castaneum (Herbst) 1797 larvae. Cumulative food consumption egestion during insect development weight values adult insects determined oxygen was estimated. At (4 μg/g wheat for P . , 250...

The increases of environmental concern over the accumulation long term impact radioactive nuclides e.g. 137Cs encourage isolation bacterial species resistant to and could accumulate such nuclides. Bacterial isolated from hazardous liquid wastes at Hot Laboratories Centre were investigated for their removal waste solutions. biosorption capacities free immobilized biomass studied using batch experiments optimum conditions. Different immobilization matrices namely; calcium alginate (CA),...

Abstract The infectivity of seven entomopathogenic nematode strains the families Steinernematidae and Heterorhabditidae were tested against last instar larvae cotton leafworm, Spodoptera littoralis (Biosd.) greater wax moth, Galleria mellonella (L.) in a Petri dish sand column assay. Exposure insect species was done at dose 100 IJ/ ml. Heterorhabditis sp. ELG., H. indica, ELB. highest activity, they gave 100% mortality to S. assay 24 h postexposure. rest mortalities ranged between 50 90%...

Phenol is highly toxic and carcinogenic compound its biodegradation very important to meet the environmental regulations. The paper presents main results obtained from study of phenol process by pure culture Microbacterium terregenes isolated NORM soil collected oil field. factors affecting degradation such as pH mineral salt media (MSM), temperature, immobilized biomass weight stirring were studied. experimental work was carried out using bacterial cells within calcium alginate (CA) gel...

The compatibility of the nematode-bacteria complex Steinernema carpocapsae, abbasi, and Heterorhabditis bacteriophora with neem plant extracts (seeds leaves) to control diamondback moth, Plutella xylostella (L.) on Chinese cabbage plants was investigated under laboratory conditions. initial treatment leaves resulted in more susceptibility P. seeds extract than extract. combination studies a higher synergistic effect H. bacteriophora, S. abbasi carpocapsae compared that In contrast, gave an...

In this study, 99m Tc-plazomicin, a new radio-antibiotic complex, was prepared specifically for bacterial infection localization and monitoring. Factors affecting the labeling reaction were studied optimized to obtain high yield (98.8 ± 0.2%). silico, radiochemical physicochemical characterization biodistribution performed assess complex aptness as radiopharmaceutical. The biologically evaluated in vitro using bacteria vivo different inflammation models (sterile, bacterial, fungal). Uptake...

The bacterial symbionts isolated from the entomopathogenic nematodes were compared for their pathogenicity to last instar larvae of G. mellonella at both Phases I and II. Most Phase cause 100% mortality within 2-3 days post-injection with 1 times; 10 3 cells/larva. decreased in following order: Xenorhabdus nematopbilus, Flavimonas oryzihabitans, Photorhabdus luminescens bovienii LD 50 values 40, 55, 70 170 injection II did not give even after 4 post-injection. time response phases symbiont...

Biochemical analysis of the haemolymph and body fat larvae red palm weevil, Rhynchophorus ferrugineus, revealed specific variations in their metabolism during infection with nematode-bacterial complex (Steinernema carpocapsae–Xenorhabdus nematophilus) (Heterorhabditis bacteriophora–Photorhabdus luminescens). The total amino acid composition showed an obvious decrease by 62.58 65.67% infected each these complexes, respectively, as compared untreated larvae. Some acids increased others a after...

The ability of some isolates Bacillus thuringiensis to produce dark brown pigment was measured as an indicator UV resistance. M5 indigenous Egyptian isolate used wild type improve its resistance UV. It exposed irradiation for different periods ranging between 1 and 10 h. induced mutants were examined morphologically by phase contrast microscope. One hundred forty four obtained; them selected tested their toxicity against Spodoptera littoralis. results showed that 62, 65 85 the most toxic...

The potential of bacterial symbionts in suppressing T. squalida populations on cauliflower from transplanting to harvest was evaluated. Significant reductions plant infestation percentage and population density (/m2) were recorded throughout the plantation seasons 2005 2006 after spraying plants. reduction numbers/m2 highest March for treatments with X. nematophilus P. luminescens. also reduced economic threshold this experiment 1.04 before X.nematophlius 0.66 2005. In 2006, 0.39 0.07,...