background wastewaters with high salt content disturb the metabolic function of microorganisms causing plasmolysis or activity loss in microorganisms, so the efficiency of biological treatment of saline wastewater by conventional microorganisms will decrease. objectives this study aimed to find the outbreak of disorder in the biological wastewater treatment process and how much salt leads to lo...

results the results of this study showed that the release of soluble chemical oxygen demand (scod) in the supernatant and srf were in the range of 127.9-831 mg/l and 12.48-36.55 m/kg at 10 to 120 min ultrasonic contact time, respectively. in addition, ts and vs decreased from 57.98 and 56.31 to 52.69 and 49.87 mg/l, respectively. despite the significant reduction in the solids, there was no con...

Living organisms can sense and respond to external and internal stimuli. Response isdemonstrated in many forms including modulation of gene expression profiles, motility,secretion, cell death, etc. Nevertheless, all forms share a basic property: they depend on sensingsmall changes in the concentration of an effector molecule or subtle conformational changes ina protein and invoking the appropri...

The assessment of ecosystem service (ES) supply and demand is crucial for the sustainable development dryland drainage basins. natural ecosystems in Kaidu-Kongque River Basin have experienced severe ecological degradation recent years, ES were contradicted due to water scarcity excessive utilization. In this paper, supply–demand five key services evaluated, their spatial matching was also analy...

Since the implementation of Development Western Regions in 2000, a series major ecological construction projects have been implemented, leading to changes conditions and services western China. This study calculated amount ecosystem total region from 2000 2019, analyzed characteristics spatio-temporal variations services. A relevant analysis method was applied explore tradeoff synergy service. ...

in this  cross sectional s tudy carried out in s pring and s ummer, 79 farmers  working  in different  job  pos itions including agriculture, hus bandry and horticulture in north of iran were participa ted. evaluation of the heat s tres s was conducted us ing wet bulb glob temperature (wbgt) index according iso7243 and heat s train evaluation us ing  meas uring  the  individual  phys iological ...

exposure to toluene can be associate with genotoxicity, neurological dysfunction, reproductive toxicity, and etc. biomonitoring of hippuric acid (ha) is used for a long time as an occupational exposure index to toluene. the aim of this study was to explore efficiency of ha as a biomarker of exposure to low level of toluene for iranian petroleum depot workers in 2011. personal monitoring to tolu...

introduction: in this study, arrangement of a low-cost optical tomography device compared to other methods such as frequency domain diffuse tomography or time domain diffuse tomography is reported. this low-cost diffuse optical imaging technique is based on the detection of light after propagation in tissue. these detected signals are applied to predict the location of in-homogeneities inside p...

methyl indole derivative of some 6-aryl-4,5-dihydropyridazin-3(2h)-ones (3a-e) were synthesized by mannich reaction and evaluated as anticonvulsant against mes (50ma, for 2sec), inh (250mg/kg), scptz (80mg/kg) and str (3mg/kg) induced convulsion methods at 50 mg/kg dose level. all compounds 3a-e were also evaluated as antitubercular agent against m. tuberculosis h37rv by maba method. all compou...