81 research outputs found
United States v. Rodriguez: Fresno Laser Pointer, A āKnuckleheadā But Not A āBin Ladenā
In United States v. Rodriguez, the Ninth Circuit overturned a harsh conviction sentencing Sergio Patrick Rodriguez to five years in prison for aiming a laser pointer at a Fresno Police helicopter, in violation of 18 U.S.C. Ā§ 39A, and an additional fourteen years in prison for attempting to interfere with its operation, in violation of 18 U.S.C. Ā§Ā§ 32(a)(5) and (8). The panel reversed the conviction, finding that Rodriguez did not act with reckless disregard for the safety of human life by shining the laser pointer at the helicopter, and remanded his conviction for aiming the pointer itself for resentencing
Study on some hematological factors of Salmo trutta caspius
Regarding to measure some hematological factors of Caspian Salmon (Salmo Trutta caspius), 55 immature and 21 mature individuals were studied. The main results were: Immature Mature - Hemoglobin value (gr/dl) 7.20 9.87 - Hematocrit 34.1 39.2 - Mean No. of red blood cells (per mm3) 934300 1306200 - Mean No. of white blood (per mm3) 8380 6219 - Mean No. of platelets (per mm3) 21180 13159 As the results showed the number of white blood cells and platelets in immature individuals were more than mature specimen. The obtained results of blood indices were as follow: Immature Mature - Mean MCV (FL) 385.4 302.9 - Mean MCH (Pg) 82.0 75.5 - Mean MCHC (%) 21.6 25.6 - Lymphocyte (%) 96.1 69.9 - Neutrophil (%) 3.4 29.4 - Monocyte (%) 0.52 1.14 Notice: Eosinophil and basophil cells weren't observed
Histopathological changes of gill, liver and kidney in Caspian kutum exposed to Linear Alkylbenzene Sulfonate
The histopathological effects of Linear Alkylbenzene Sulfonate on the gill, liver and kidney tissues of the Caspian kutum, Rutilus frisii kutum were studied. The fish were exposed to three sublethal concentrations of anionic detergent, Linear Alkylbenzene Sulfonate (LAS) for short term intervals (192 h). Gill, liver and kidney samples were collected after 192 h of exposure to LAS and lesions were analyzed by light microscopy. The histological changes to gills were edema, fusion of lamellae and lamellar aneurism. Some alterations like reduction of the interstitial haematopoietic tissue, tubular shrinkage, degeneration in the epithelial cells of renal tubule and necrosis were observed in the kidney. In the liver tissue, hepatocyte degeneration, congestion and dilation of sinusoid and vacuolar degeneration were seen. It seems that sublethal concentration of LAS may affect severe changes to gill, kidney and liver of R. frisii kutum specimens that leads to malfunction of these organs which cause damage to health of the fish
Identification of metallothionein gene structure in sterlet (Acipenser ruthenus)
Aquatic organisms present, not only simple sources of accumulated metal, but can interact with metals, altering their toxicity. Due to exposition of biosphere with metals, organisms have developed various defense mechanisms to protect themselves against adverse effects of these ions and their compounds. Metallothionein (MT) is one of that which represents a critical mechanism for detoxification of metals. The sterlet (Acipenser ruthenus) is a bottom feeding sturgeon species and because the fish are dependent on invertebrate species for food throughout their life cycle, the sterlet could be a good indicator of the quality of the state of water ecosystem. Addition of copper to water leads to the induction of MT. The present study analyzed MTgene primary structure that was excreted from the liver of sterlet exposed to sub-lethal copper concentrations (0.075 mgL^-1 ). At the beginning to identify the molecular structure of Metallothionein of sterlet, a cDNA encoding MT was purified from livers of sterlet, and the MTgene was amplified. The primary structure of sterlet metallothionein (S-MT) contained 20 cysteine residues, which is the same as MTs of teleost fishes. Although, the primary structure of S-MT contained 63 amino acids, which is longer than any MT identified in teleost fishes but similar to the structure of MT gene in lake sturgeon and white sturgeon. The complete nucleotide sequence of the S-MTgene has been detected. We have determined the structure of the fish copper-binding protein by DNA sequence analysis of the gene
Effect of malathion insecticide on liver tissue and enzymes of Rutilus rutilus caspicus of the Caspian Sea
Malathion is an organophosphate insecticide which uses to destroy insects and pests of fruit trees, ornamental plants and agricultural corps. In the present study, effect of Malathion on liver and selected enzymes (SGOT, SGPT and ALP) was studied in Caspian Roach (Rutilus rutilus caspicus). Four treatments with three replications were designed to carry out the survey. Four groups of experimental fish (containing 30 fish in each group) were exposed to different concentrations of Malathion. e. 0, 0.01, 0.05 and 0.1 ppm respectively for 23 days. Blood collection was done in 3rd, 13th and 23th after exposure to Malathion and also 30 days after recovery in clean water and enzymes were measured using standard kits. Also liver tissues were isolated to histological examination. Results showed that tissues of control group (0ppm) were normal and there were no damages, yet there were hepatocytes degeneration, picnotic in nuclear, hepatocytes vacuolization, vascular congestion and sinusoid congestion in liver of other groups. Tissue damages were increased in higher malathion concentration and over time. Results related to enzymes showed that there were no significant differences in SGOT of fish treated with low concentrations of malathion (0.01 and 0.05 ppm) and control group but it was increased in highest concentration (p<0.05). Yet, SGPT increased significantly after passing 23 days in all fish exposed to malathion But ALP changes trend was decreasing
Pengaruh Jerami Padi Dan Rasio Pupuk Urea, Tsp, Kcl Terhadap Pertumbuhan Dan Produksi Kedelai ( Glycine Max (L) Merril. )
This research was conducted to find out the effect of rice straw and ratio of Urea, TSP, KCL on the growth and production of soybean. This research has been conducted in the experimental farm, Faculty of Agriculture University of Riau, from January to April 2016. This study used randomized block design (RAK), arrange in a factorial with 2 factors, factors of rice straw mulch with 3 levels doses of 0 kg/Ha, 5 kg/Ha, 10 kg/Ha and factor ratio of Urea, TSP, KCL with 4 levels doses of 0 kg/Ha, 25, 50, 50 kg/Ha, 50, 100, 100 kg/Ha, 75, 150, 150 kg/Ha, two factors combined to obtain 12 combined treatment, for each treatment consisted of three replications, in order to get 36 experimental units. The data were analyzed by analysis of variance and significantly different continued with Duncan New Multiple Range Test (DNMRT) at 5% level. Each experimental unit consisted of 52 plants, only seven plants become sample. The parameters measured were the number of the effectiveness root nodules per plant, the growth rate of plants, weeds, number of pods per plant, pods percentage pithy, dry seed weight/m2, and the weight of 100 seeds. Research data show that rice straw dose of 10 ton/Ha and ratio of Urea, TSP, KCl doses of 50, 100, 100 kg/Ha produces a dry seed weight of 2,69 tons/Ha, higher than without treatments is 1,3 tons/Ha
Investigation of antibacterial and antifungal activities of the extract marine algae Sargassum glaucescens
In recent decades the use of algae in the food and pharmaceutical industries is of great importance. The antimicrobial activity of brown alga methanol, ethyl acetate, hexane, and chloroform extracts on bacteria gram positive, gram negative, and fungi was evaluated by using nutrient broth macrodilution test. Sargassum glaucescense was collected around the coastal waters of Chabahar (Oman Sea) in Nov and Dec 2015. Six pathogenic organisms including; Enterococcus faecium ATCC 51299, Streptococcus mutans ATCC 35668, Shigella boydii ATCC 25923, Pseudomonas aeruginosa ATCC 27853, Klebsiella pneumoniae ATCC 13883, Salmonella enteritidi PTCC, 1709, Candida albicans ATCC 10231 and Aspergillus fumigatus PTCC 5009 were investigated by the broth dilution method. Methanolic Extract for six strains showed good activity amongst eight strains. Hexane extract, after methanolic extract has good effect on antimicrobial activity against five strains. All bacteria strain in this survey has showed resistance against ethyl acetate and chloroformic extracts. All extract of S. glaucescens has good inhibition growth against two fungal strains. S. glaucescens using four various solution extract against eight different human pathogens showed an important antimicrobial and antifungal activity. However, more investigation has to be done on separation, purification and detection of the active ingredients in order to recognize their antifungal and antibacterial activity
Histopathological effects and toxicity of atrazine herbicide in Caspian kutum, Rutilus frisii kutum, fry
This study aimed to investigate the toxic effects of atrazine herbicide on the fry of Caspian kutum (Rutilus frisii kutum, Kamensky, 1901). First the 96-h LC50 of the fry were exposed to atrazine at the concentration of 24.95 ppm was determined. Then the toxicity of this herbicide on Caspian kutum fry exposed to the concentration of 12.47ppm (1/2 LC50), for four days was measured and compared with a control group. Comparison of the length, weight and condition factor showed no significant differences between atrazine exposed and control group. The concentration of Na+, K+, Ca2+, Mg2+ and Cl- in the whole body of fry in control and atrazine exposure groups were as the following order: Ca2+>K+>Na+>Cl->Mg2+ and Ca2+>Na+>K+>Mg2+>Cl-, respectively. Results showed that the concentration of all these ions were higher in atrazine exposure group than control group, except for Cl-, and the only significant differences was found in Na+ concentration. Major histopathological effects of atrazine on the gills were hyperplasia and thickening of the filaments, separation of the pavement cells of the lamellae epithelium from the pillar cells and swelling of the epithelial cells. Results of the present study showed that atrazine could affect the ion composition of the body, and caused major damages in gill epithelium even at sublethal concentration and acute exposure, but had no effects on the growth parameters
Analysis of vitellogenin gene structure in Caspian roach, Rutilus caspicus (Pisces: Cyprinidae) during exposure to Atrazine
Chemical contamination of aquatic environments to EDCs has become a major focus of environmental toxicology research. The exposure of fishes to estrogenic EDCs in aquatic environments is most frequently assessed by analyzing Vitellogenin (Vg) (the egg yolk precursor protein) expression. Therefore, characterization of Vg gene is of high priority for EDCs bio-monitoring. So, we prepared liver tissue samples of Caspian roach, Rutilus caspicus for RNA extraction. Following the cDNA synthesis, specifically - designed primers were employed to amplify the Vg gene and ultimately sequence it. The evolutionary analyses of the sequence were performed using MEGA7 software. The obtained results indicated that the designed primers successfully amplified the partial cDNA sequence. Our results indicated that this sequence most probably belongs to the Vg1 form of the gene. Moreover, it was demonstrated that Caspian roach and Petroleuciscus esfahani share a common ancestor. Noteworthy, the study of Vg gene would be helpful to understand the molecular mechanisms of development and would be used to establish a bio-monitoring tool for detection of exposure to different EDCs
The effects of creosote on mortality rate and blood biochemical factors of stellate sturgeon (Acipenser stellatus)
The effects of creosote on stellate sturgeon (Acipenser stellatus) juveniles each weighing 3.6 Ā±1 grams was evaluated. Acute toxicity test was undertaken in static water quality at 22 degree C plus or minus 1 according to the OECD method at the Caspian Sea Ecology Institute in 2005. The effect was assessed based on the results of the acute toxicity test. For the test, the hematological and biochemical properties of one control and five experimental groups of the fish juveniles what were exposed to creosote were compared. The acute toxicity test lasting 96 h was performed in fully static water condition with aeration
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