abstract wild lettuce (lactuca serriola) is an annual weed with seed reproduction. an experiment was conducted to evaluate some environmental effects on germination and emergence of this weed. the type of design was completely randomized with four replications in which factors were arranged as factorial. the experiment was carried out with 11 cm petri dishes in a germinator (10 °c) and without ...

soil and water salinity is a major constraint in arid and semi-arid regions. in order to study the impact of water salinity on physiological characteristics and dry matter production of six linseed genotypes, a 4-replicate factorial randomized complete block pot experiment was conducted. salinity consisted of four levels: 0 (control), 35 (low salinity), 70 (intermediate salinity) and 105 mm (se...

The present work investigates the relationships between nitrogen fixation, carbon metabolism and oxygen consumption by bacteroids of Mesorhizobium ciceriin root nodules of chick-pea plants. Its aim was to establish whether some of the compounds which accumulate under salt stress may be used as respiratory substrates by bacteroids to fuel their own metabolism and nitrogenase activity. Plants wer...

considering forage grass species, germination is one of the important stagesconcerning the growing stage that is often influenced by environmental stresses,particularly salinity and drought stresses. thus, this study aims to assess the effects ofsalinity and drought stresses on germination characteristics and seedling growth of desertwheatgrass, agropyron desertorum (fisch. ex link) schult. in ...

background research to understand and control the emergence and spread of antimicrobial resistance has become a public health priority. objectives this study was conducted to study epidemiology and resistant pattern of bacteria causing infection in different king khalid hospital units. patients and methods all samples were sent to the lab and routinely processed according to the standard microb...

Gas-filled microbubbles have the potential to become a unique intravascular MR contrast agent due to their magnetic susceptibility effect, biocompatibility and localized manipulation via ultrasound cavitation. However, in vivo demonstration of microbubble susceptibility effect is limited so far and microbubble susceptibility effect is relatively weak when compared with other intravascular MR su...

In this paper, the electrical performance of double gate organic field effecttransistor (DG-OFET) are thoroughly investigated and feasibility of the deviceas an efficient biosensor is comprehensively assessed. The introduced deviceprovides better gate control over the channel, yielding better charge injectionproperties from source to channel and providing higher on-state...

• Hydrogen-induced softening of RPV steel with high DSA at 288 °C. Straining in DSA-regime induces plastic localisation and increased hydrogen-traps. HESIV HELP are dominant HE mechanisms active above-yielding post-necking stages, respectively. Fracture mechanics tests hydrogenated high-temperature water °C on low-alloy reactor pressure vessel dynamic strain aging (DSA) susceptibility revealed ...

We present ~~°Yb Môssbauer spectroscopy data in the temperature range o.0455o K and magnetic susceptibility and isothermal magnetisation measurements m trie temperature range o.6-50 K in the heavy fermion compound Yb4As3. The presence of +~ 20% of Yb+~ ions is detected in trie Môssbauer spectra with an applied magnetic field of 7 T, yielding a microscopic proof of the existence of a heterogeneo...

Our objective was to determine the antibiotic susceptibility profiles of Staphylococcus aureus isolates recovered from 110 households of children with community-onset methicillin-resistant S. aureus (MRSA) infections. Cultures were obtained from household members, household objects, and dogs and cats, yielding 1,633 S. aureus isolates. The S. aureus isolates were heterogeneous, although more th...