Effect of midgut bacteria of Culex pipiens L. on digestion and reproduction

An investigation was carried out to evaluate the influence of symbiotic bacteria associated with Culex pipiens L. on preoviposition and blood meal digestion periods, and reproductive potential [fecundity and fertility]. Aposymbiotic females were obtained by feeding the normal females on 10% sucrose solution mixed with antibiotic [Tarivid] for three days before feeding them on normal blood meals from a pigeon host. A total of 4 genera were previously isolated from the midgut of C. pipiens. These genera were; Bacillus, Streptococcus, Staphylococcus and Salmonella and Shigella. It seems that the period of blood meal digestion preceded the pre-oviposition period of both bacterial free females and bacterial free females treated with one of the aforementioned bacteria. In addition, it is obviously clear that, the presence of the two bacterial genera; Bacillus and Staphylococcus in the midgut of C. pipiens is essential for normal and high fecundity. Generally, it is evident that the symbionts [gut bacteria] are essential for the completion of embryonic development

Effectiveness of the non-steroidal ecdysone mimic, RH-5849 for the control of musca domestica vicina

The new non-steroidal ecdysone mimic, RH-5849 [1, 2-benzoyl-1-tert-butylbenzohydrazine] was investigated, its biological actions were evaluated in the laboratory against a susceptible strain of Musca d. vicina. The larvae of 1-day old and of 4-day-old were fed on diets treated with different concentrations of the compound. RH-5849 shortened the larval and pupal durations and induced the initiation of premature lethal moult. The pupation rate was highly affected, where it was reduced to 46.7% at a concentration rate of 250 ppm. Also, the adult emergence was drastically blocked by the action of RH-5849 where its percentage was decreased to 42.9 at 250 ppm. In regard to the fecundity and egg viability, RH-5849 induced a cessation of oviposition in females produced from 1-day-old and from 4-day-old larvae fed on diets treated with 160 and 200 ppm, respectively. In addition, RH-5849 halted the larval and pupal growth, where the untreated pupae were generally heavier than those produced from treated larvae

Evaluation of Egyptian above knee prosthesis made in Agouza workshop

Studies were carried out on 474 patients who were suffering from above knee amputations. They were classified according to their sources of references, ages, and distributions, types of prosthesis used and durability of their limbs. It was found that military service patients, and national health insurance patients constituted most of referred patients, other patients came from veterans and private sources. More than half of these patients were young aged. The prosthesis-sused were partially quadrilateral and partially total contact sockets, The production of plastic sockets was three times than that of wooden sockets, and also proved to be more durable. Most of the knees used were provided with constant friction single axis which, proved to be satisfactory. Our limbs were also provided with SACH foot, which proved to be significantly more durable than the other types previously used

Evaluation of Egyptian below knee prostheses made in Agouza workshop

A study was made during 1978 on 813 patients complaining from below knee asputation and attending to our center for fitting with artificial limb. The study showed that most of our patient were referred from military hospitals, health insurance hospitals and less than 10% from private. The most common age incidence of ampulations was from 20 to 30 years in military and civilian patients, the common cause of ampulation was due to trauma. Our production from patellar tendon-bearing prosthesis was four times than that of conventional type. Our prosthesis were significantly durable and fitted well to our patients. Most of the patients used their artificial limbs efficiently specially those who were fitted with P.T.B. prosthesis