abstract: this paper presents the results of pullout tests on uniaxial geogrid embedded in silica sand under monotonic and cyclic pullout forces. the new testing device as a recently developed automated pullout test device for soil-geogrid strength and deformation behavior investigation is capable of applying load/displacement controlled monotonic/cyclic forces at different rates/frequencies an...

race-specific resistance of wheat to yellow rust caused by puccinia striiformis f. sp. tritici has been reported as short-lived. partial resistance, a kind of quantitative resistance, has been reported to be more stable. partial resistance in terms of slow rusting parameters including final rust severity (frs), apparent infection rate (r), relative area under disease progress curve (raudpc), an...

helicobacter pylori is an important human pathogen and a gram-negative, spiral shaped and microaerophilic bacteria with persistence colonization in gastric mucosa, causes gastroduodenal inflammation and destruction, resulting in diseases such as duodenal ulcer disease, gastric ulcer disease. when h.pylori discovered by warren and marshall, effective therapy developed for this infection and resu...

objective(s) extensive use of quinolones has been associated with raising level of resistance. in the current, we focused on assessing the prevalence of escherichia coli resistance to quinolones and frequency of qnra, qnrb and qnrs in non esbls (extended spectrum beta-lactamases) and esbls producing e. coli with blashv and blatem. materials and methods one hundred and fifty e. coli isolates wer...

background blood infections are an extensive range of disorders that can vary from limited bacteremia to fatal septicemia. bacteremia refers to the transient presence of a bacterium in the bloodstream. a delay in the diagnosis and treatment of sepsis can cause mortality, with a 20% - 50% prevalence rate. objectives due to the changing patterns of antibiotic resistance, as well as differences in...

tuberculosis is an infectious disease caused by mycobacterium tuberculosis and is the primary cause of mortality in the world. m. tuberculosis strains are important intracellular pathogens causing infection in oxygen-rich macrophages in the lungs. the emergence of aids, declined socioeconomic standards and a lessened emphasis on tb control programs have contributed to the disease resurgence. re...

the russian wheat aphid (rwa), diuraphis noxia has been known as a major pest of small grains, particularly wheat, worldwide. this study evaluated the biological responses of rwa to six wheat cultivars including yavarus, pishgam, aadl, omid, darab 2 and sepahan. the experiment was conducted under greenhouse conditions of 25 ± 2 °c, 55 ± 10 % r. h. and a photoperiod of 16:8 (l: d) h. resistance ...

background: nowadays, nosocomial infection with multidrug-resistant acinetobacter is an important problem in the world, which is facing wide spectrum antibiotics and hence has become resistant. m aterials and methods: in this study, positive cultures of acinetobacter from one hundred clinical samples in seven hospitals from tehran during 2012-2013 were collected for checking antibiotic suscepti...

the effect of protein supplementation on athletic performance and hormonal changes was examined in 32 experienced collegiate strength/power athletes participating in a 12-week resistance training program. method: subjects were randomly assigned to either a protein supplement (pr; n = 22) or a placebo (pl; n = 10) group. during each testing session subjects were assessed for strength (one repet...