نتایج جستجو برای: pretreatment

تعداد نتایج: 40965  

2003
Paul Finley Jean Beckord John Crowley Charles A. Coltman

Six hundred twelve eligible, previously untreated patients with active multiple myeloma and at least some data available for analysis were entered into a randomized trial (Southwest Oncology Group [SWOG] Phase 111 myeloma study 8229/30), in which the prognostic significance of pretreatment serum 8, microglobulin levels was evaluated. Because there was no statistically significant survival diffe...

2015
Lei Qin Wen-Chao Li Jia-Qing Zhu Jing-Nan Liang Bing-Zhi Li Ying-Jin Yuan

BACKGROUND Pretreatment of lignocellulosic biomass is essential to increase the cellulase accessibility for bioconversion of lignocelluloses by breaking down the biomass recalcitrance. In this work, a novel pretreatment method using ethylenediamine (EDA) was presented as a simple process to achieve high enzymatic digestibility of corn stover (CS) by heating the biomass-EDA mixture with high sol...

2016
Furong Kou Zhihao Lu Jian Li Xiaotian Zhang Ming Lu Jun Zhou Xicheng Wang Jifang Gong Jing Gao Jie Li Yan Li Lin Shen

To explore the influence of pretreatment lymphopenia on the toxicity and efficacy of first-line chemotherapy in patients with metastatic esophagus squamous cell carcinoma (ESCC). In total, 215 patients were included in this retrospective study. Correlations between pretreatment lymphopenia (lymphocyte count <1 × 10(9) /L) and the occurrence of toxicity and the efficacy of first-line palliative ...

2013
Jie Lu Xuezhi Li Ruifeng Yang Jian Zhao Yinbo Qu

BACKGROUND Liquid hot water (LHW) pretreatment is an effective and environmentally friendly method to produce bioethanol with lignocellulosic materials. In our previous study, high ethanol concentration and ethanol yield were obtained from water-insoluble solids (WIS) of reed straw and corn stover pretreated with LHW by using fed-batch semi-simultaneous saccharification and fermentation (S-SSF)...

Journal: :Bioresource technology 2005
Tim Eggeman Richard T Elander

Five pretreatment processes (dilute acid, hot water, ammonia fiber explosion (AFEX), ammonia recycle percolation (ARP), and lime) for the liberation of sugars from corn stover are compared on a consistent basis. Each pretreatment process model was embedded in a full bioethanol facility model so that systematic effects for variations in pretreatment were accounted in the overall process. Economi...

2016
Samarthya Bhagia Hongjia Li Xiadi Gao Rajeev Kumar Charles E. Wyman

BACKGROUND Flowthrough pretreatment is capable of removing much higher quantities of hemicellulose and lignin from lignocellulosic biomass than batch pretreatment performed at otherwise similar conditions. Comparison of these two pretreatment configurations for sugar yields and lignin removal can provide insights into lignocellulosic biomass deconstruction. Therefore, we applied liquid hot wate...

Introduction: Studies suggest that ATP-sensitive potassium (KATP) channels are a potential pharmacotherapeutic target for neuroprotection in neurodegenerative diseases. The current study aimed at evaluating the effect of pretreatment with glibenclamide (Glib) and B vitamins supplement on the severity of behavioral symptoms in 6-hydroxydopamine (OHDA)-induced Parkinsonism. Also malondialdehyde (...

2014
Mengru Liu Lanfeng Hui

Acetic acid-catalyzed steam explosion pretreatment was applied to wheat straw at temperatures of 190 and 210 °C for 2, 6, and 10 min of residence time. The effects of pretreatment conditions on the total gravimetric recovery, hemicellulose sugars, glucose content, and yield of the enzymatic hydrolysis of cellulose were studied. The results indicated that the total gravimetric recovery decreases...

Journal: :Carbohydrate polymers 2013
Taiying Zhang Rajeev Kumar Charles E Wyman

Dilute oxalic acid pretreatment was applied to maple wood to improve compatibility with downstream operations, and its performance in pretreatment and subsequent enzymatic hydrolysis was compared to results for hydrothermal and dilute hydrochloric and sulfuric acid pretreatments. The highest total xylose yield of ∼84% of the theoretical maximum was for both 0.5% oxalic and sulfuric acid pretrea...

2011
Weixin Zhong Hongbo Yu Lili Song Xiaoyu Zhang

Although biological pretreatment has the advantages of being environmentally friendly and having low-energy consumption, it usually requires a relatively long incubation time. In this study, a novel combined pretreatment with white-rot fungus and alkali at near room-temperature for saccharification of corn stalks was investigated to speed up the biological process. Biological pretreatment with ...

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