this research was conducted at torogh agricultural research station in khorasan-e razavi province to determine the impact of irrigation cutoff at different growth stages and percentage of water use on the yield and water use efficiency (wue) of wheat cultivars using sprinkler irrigation. the study was done from 2006-2008. the experimental design was a randomized complete block design with a str...

The composite flame retardant composed of Microencapsulated Red Phosphorus and aluminum hydroxide was used to study the retardancy ABS wire rod for additive manufacturing. Through detection material oxygen index, mechanical properties solution flow rate, results show that when ratio red phosphorus in microcapsule is 2:1 addition amount 27 phr, LOI 29.7, reaching UL94 V0, tensile strength 30.16M...

The present study aimed to determine the physical, chemical, and textural properties of goatskin used in production Tulum cheese traditional industrial ripening conditions. Natural conditions (caves) some parameters (temperature, humidity, oxygen, CO2 values) cold storage dairy plants were examined between March October. It was determined that temperature moisture content natural cave where car...

The need for the development of new biodegradable materials and modification properties current ones possess has essentially increased in recent years. aim this study was comparison changes occurring poly(?-caprolactone) (PCL) due to its by high-energy electron beam derived from a linear accelerator, as well addition natural fibers form cut hemp fibers. Changes structure obtained composites geo...

To further promote the research and application of resin type waterproof adhesive layer materials, types, relevant specifications, trends in China are comprehensively investigated. The performance evaluation indicators, requirement, requirements different specifications systematically analyzed, key indicators recommended. basic properties common materials studied, bonding layers were compared e...

Core yarn was spun by introducing a PVA multifilament as the core through the yarn forming zone of a ring spinning frame and viscose fibers as the sheath containing tracer fibers. The water soluble PVA multifilament was extracted from the yarn structure. Then internal structure and properties of the hollow ring yarn was assessed and compared with those of typical ring yarns. Also, two plain fab...

The influence of dyeing and spinning on the characteristics of cotton fibers and its impact on the properties of cotton mélange yarn has been investigated. Grey cotton fibers with mean fiber length and fineness of 29 mm and 4.2 micronair were pre-treated and dyed. Three ring yarns were spun from 100 % grey cotton (R.R.Y), 50-50 % blend of dyed and grey cotton (M.R.Y) and 100 % dyed cotton fiber...

A transcription initiation factor, the σ(70) subunit of Escherichia coli RNA polymerase (RNAP) induces transcription pausing through the binding to a promoter-like pause-inducing sequence in the DNA template during transcription elongation. Here, we investigated the mechanism of σ-dependent pausing using reconstituted transcription elongation complexes which allowed highly efficient and precise...