Determine of appropriate concentration of propofol anesthetic drug in Benni (Barbus sharpeyi)

The propofol anesthetic drug was used on 60 farmed Benny fish (Barbus sharpeyi) with mean (±SD) weight and length 99±30g and 208±19.2cm, respectively. The fish were divided into 6 treatments of 10 fish. The treatment 1(control group) was not exposed to any type of anesthesia material. Five treatments were exposed to propofol anesthetic drug with 2, 4, 6, 8 and 10mg/l concentration by immersion method. The mean time of initial anesthesia, mean time of total anesthesia, mean recovery time from anesthesia and survival rate were investigated in treatments. Results showed that increasing of propofol dose had reduced with time of initial anesthesia. Treatment 2 and 3 with 2 and 4mg/l of propofol were significantly different with treatment 5 and 6 with 8 and 10mg/l of propofol material. The mean time of total anesthesia in treatments 5 and 6 with 8 and 10mg/l of propofol material were significantly different with treatments 2, 3 and 4 with 2, 4 and 6mg/l of propofol material, respectively. The mean (±SD) recovery time from anesthesia in Benny fish in treatment 5(8mg/l) was highest amount (428±33S) compared to other treatments. Survival rate in all treatment except treatment 6 (70%) was 100%. Overall, it appears that propofol material was as an anesthetic drug that present experiment showed safety. In 4-6mg/l concentration had the best performance in total anesthesia and recovery to initial condition

Determination of artificial propagation biotechnic of Barbus xanthopterus

This project was carried out in the year 2003 in Khuzestan province waters to determine the best artificial propagation techniques for mass production of Barbus xanthopterus. The fish is one of the most valuable and economic species in the area. The propagation was started in late March and continued till late April while suitable temperature was 21-24.5 C. A number of 23 female broodstock with mean weight and length 3.85±0.45kg and 64.95±21cm respectively with a sex ratio of 2:1 male to female were used in the process. The amount of hypophysis injection was 4mg/kg weight of fish and two injections with 10-12 h interval to 10:90 were undertaken. Spawning success was 87% in broodstock. Latency period was 15- 17h and the incubation duration was 59-60h in 23-25 C. The fish eggs has a low stickiness and the count of dry and water-absorbed eggs were 480±32 and 287±25g, respectively. In the twice-injected broodstock, the fertilization rate was 77.22±3.1%, the hatching rate was 81.2±1.89% and the survival rate was 83.4±2%. Size of the dry and water-absorbed eggs was 1248±45 and 2110±125, respectively. Washing time with fertilization liquid was 10 min for removing stickiness. In the end, 660 thousand larvae were produced and released to earthen ponds for culture

Variability in gene cassette patterns of class 1 and 2 integrons associated with multi drug resistance patterns in Staphylococcus aureus clinical isolates in Tehran-Iran

Background: To investigate antibiotic resistance, the occurrence and distribution of class 1 and 2 integrons in multidrug- resistant Staphylococcus aureus isolates from hospitals in Tehran, Iran. The isolates were examined for susceptibility to antimicrobial agents. The mecA gene, class 1 and 2 integrons were detected by PCR. Integrase positive strains were further analysed for the presence of resistance gene cassettes using specific primers and were sequenced. Results: Among 139S.aureus isolates, 109 (78.4 ) and 112 (80.5 ) strains were considered as multidrug resistant and mecA positive, respectively. Class 1 integrons and internal variable regions were found in 72.6 (101/139) and 97 (98/101) and class 2 integrons and variable regions also in 35.2 (49/139) and 65.3 (32/49) of S.aureus clinical isolates, respectively. Twelve distinct cassette arrays were found, containing genes encoding resistance to β-lactams, aminoglycosides, streptothricin, trimethoprim, chloramphenicol,a putative glucose dehydrogenase precursor and a protein with unknown function. Gene cassette arrays aadB, aadA2 and dhfrA1-sat2-aadA1 were common in S.aureus isolates. We detected a completely new gene cassettes which contained aadB, oxa2, aacA4, orfD-aacA4-catB8, aadB-catB3, orfD-aacA4 and aadB-aadA1-cmlA6 of class 1 and dhfrA1-sat2-aadA1, dhfrA11, dhfrA1-sat2 of class 2 integrons. Conclusions: This is the first study to report carriage of class 1 and 2 integrons and associated gene cassettes among in S.aureus isolates from Iran. © 2015 Mostafa et al

The effect of Coriander cream on healing of superficial second degree burn wound

Background: Coriander with the binominal name of Corianda Sativum, is one of the oldest medicinal plants ever known to man. Anti-inflammatory, anti-microbial, and anti-fungal effects of its oil has been mentioned in numerous studies. This study examines the impact of coriander cream on wound healing of the second-degree singe burn. Methods: In this experimental study which was performed in the animal lab of the Hazrat Fatemeh Hospital in Tehran, 48 adult male rats with an approximate weight of 250- 300 grams, with deep burns of 2 cm 4�2 dimensions were prepared and divided into 4 groups of 12. We used silver sulfadiazine cream, alpha ointment, coriander cream and vaseline gauze (control group) dressings in burn wound of the groups 1 to 4 respectively. At the end of the study (30 days), rats were euthanized with a high dose of thiopental and the wounds were evaluated on days 10 and 17 with a punch biopsy. Samples were fixed with 10 formalin on histopathology slide using haematoxylin and eosin (H&E) staining (to assess and determine the presence of inflammatory cells). The amount of fibrin and collagen at the site were evaluated using a software program ImageJ, version 1.45 (National Institutes of Health, Bethesda, Maryland, USA). Results: The mean of wound surface area in the first photography was no significant (P= 0. 135). The rate of wound healing in alpha ointment and coriander cream had better outcomes than either of the other two groups (P= 0.000). The healing of the wound in silver sulfadiazine group was significantly less than other groups. Pathology results showed a statistically significant difference between the four groups (coriander, alpha, SSD and control), based on the Kruskal-Wallis test. These relate to (1) polymorphonuclear in the first (P= 0.032) and the second series (P= 0.003), (2) Angiogenesis in the second series (P= 0.004). (3) Fibrosis in the first series (P= 0.024) and the second series (P= 0.000). Conclusion: The results of this study showed that wound healing improvement in coriander cream group was better than the control group and silver sulfadiazine group; and similar to alpha ointment group. © 2015, Tehran University of Medical Sciences. All rights reserved

The influence of cosmic-rays on the magnetorotational instability

We present a linear perturbation analysis of the magnetorotational instability in the presence of the cosmic rays. Dynamical effects of the cosmic rays are considered by a fluid description and the diffusion of cosmic rays is only along the magnetic field lines. We show an enhancement in the growth rate of the unstable mode because of the existence of cosmic rays. But as the diffusion of cosmic rays increases, we see that the growth rate decreases. Thus, cosmic rays have a destabilizing role in the magnetorotational instability of the accretion discs.Comment: Accepted for publication in Astrophysics & Space Scienc

Itinerant Ferromagnetism in the Periodic Anderson Model

We introduce a novel mechanism for itinerant ferromagnetism, based on a simple two-band model. The model includes an uncorrelated and dispersive band hybridized with a second band which is narrow and correlated. The simplest Hamiltonian containing these ingredients is the Periodic Anderson Model (PAM). Using quantum Monte Carlo and analytical methods, we show that the PAM and an extension of it contain the new mechanism and exhibit a non-saturated ferromagnetic ground state in the intermediate valence regime. We propose that the mechanism, which does not assume an intra atomic Hund's coupling, is present in both the iron group and in some f electron compounds like Ce(Rh_{1-x} Ru_x)_3 B_2, La_x Ce_{1-x} Rh_3 B_2 and the uranium monochalcogenides US, USe, and UTe

The study of rearing density effect on growth and survival of fingerlings Kutum, Rutilus kutum, with Caspian Sea water

Rutilus kutum is one of the most important economic fish species of Iranian costal of Caspian Sea. This species conducted more than 60% of fish caught in Caspian Sea annually, and more than 10 thousands fisherman engaged to its fishery. In present study, kutum fingerlings reared in two different densities include of 25 and 40 fish/m^2 with mean weight of 17.5±5.87 g. The period of test being planned 10 weeks and the test organism housed in circular concrete pools of 3 m^3 capacity with flowing water and aeration in pools are supplied. The fishes feed by extrude food with 45% crude protein and 14% crude fat. After termination of the experiment, the result showed that weight gain performance, specific growth rate, condition factor, food efficiency rate and protein efficiency rate decreased, while food conversion ratio increased with rising of density, as their different was significance in two experimental treatments (p<0.05). The kutum reared in low density showed significantly higher survival rate (SVR) (with 88.8%) than high density (with 76.9%) (p<0.05). Based on the different observed effects of the density on growth and survival, it is recommended the use of a 25 kutum/m^2 density for rearing by Caspian Sea water

Pulsar-wind nebulae and magnetar outflows: observations at radio, X-ray, and gamma-ray wavelengths

We review observations of several classes of neutron-star-powered outflows: pulsar-wind nebulae (PWNe) inside shell supernova remnants (SNRs), PWNe interacting directly with interstellar medium (ISM), and magnetar-powered outflows. We describe radio, X-ray, and gamma-ray observations of PWNe, focusing first on integrated spectral-energy distributions (SEDs) and global spectral properties. High-resolution X-ray imaging of PWNe shows a bewildering array of morphologies, with jets, trails, and other structures. Several of the 23 so far identified magnetars show evidence for continuous or sporadic emission of material, sometimes associated with giant flares, and a few possible "magnetar-wind nebulae" have been recently identified.Comment: 61 pages, 44 figures (reduced in quality for size reasons). Published in Space Science Reviews, "Jets and Winds in Pulsar Wind Nebulae, Gamma-ray Bursts and Blazars: Physics of Extreme Energy Release

Tea drinking and cognitive function in oldest-old Chinese

10.1007/s12603-012-0077-1The Journal of Nutrition, Health & Aging169754-75