Acacia crassicarpa has a potential source as renewable forest material in Indonesia. This research clarified the conditions to produce dissolving pulp with suitable properties from A. wood by prehydrolysis at 150℃ for 3 h and soda cooking 160℃ application of 0.1％ soluble anthraquinone （SAQ：1,4-dihydro-9,10-dihydroxyanthracene sodium salt）. The presence SAQ exhibited significant increase yield （...

Corn stalk can be used as an alternative non-wood raw material to produce cellulosic dissolving grade pulp. In this work, the potential of corn stalk in the production of dissolving pulp (alpha-cellulose) was investigated. It was collect ed from a corn stalk farm of Kermanshah, Iran. The sequences of experimental work were: water and acid prehydrolysis at 160˚C for 30min, followed by Kraft pulp...

Hydrothermal, dilute acid, and steam explosion pretreatment methods, were evaluated for their efficiency to improve the methane production yield of three Mediterranean agricultural lignocellulosic residues such as olive tree pruning, grapevine pruning, and almond shells. Hydrothermal and dilute acid pretreatments provided low to moderate increase in the digestibility of the biomass samples, whe...

DEXD/H-box RNA helicases couple ATP hydrolysis to RNA remodeling by an unknown mechanism. We used x-ray crystallography and biochemical analysis of the human DEXD/H-box protein DDX19 to investigate its regulatory mechanism. The crystal structures of DDX19, in its RNA-bound prehydrolysis and free posthydrolysis state, reveal an alpha-helix that inserts between the conserved domains of the free p...

Phenolic compounds in oil wastewater are highly toxic and refractory. Hydrolysis at pH 12 for h makes these more vulnerable to attack destruction. Under the binding precipitation of polyaluminum chloride (PAC) 8, chemical oxygen demand (COD) was significantly reduced by 38%. The simulation found that hydrolysis + flocculation a complex multistep process. COD removal rate mainly controlled prehy...

Group II chaperonins are ATP-dependent ring-shaped complexes that bind nonnative polypeptides and facilitate protein folding in archaea and eukaryotes. A built-in lid encapsulates substrate proteins within the central chaperonin chamber. Here, we describe the fate of the substrate during the nucleotide cycle of group II chaperonins. The chaperonin substrate-binding sites are exposed, and the li...