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排序方式: 共有53条查询结果,搜索用时 15 毫秒
41.
Celina Sanchez-Sanchez Guillermo Baquerizo Ernestina Moreno-Rodríguez 《Water and Environment Journal》2023,37(4):657-670
This article discussed the effect of the main operating parameter involved in the operation of algal–bacterial granular sludge (ABGS) systems as promising biological processes for wastewater treatment. The focus was on the operational ranges reported in the literature capable of achieving better granule properties, good stability and high removal capacities. This review identified that hydraulic retention time (HRT), light intensity (LI) and light/dark periods were the most influential operating factors on the formation, stability, settleability and organic pollutant removal efficiency of ABGS. The discussion argued that ABGS systems enhance industrial and domestic wastewater treatment due to additional advantages that provide the symbiotic interactions to process performance, maintaining lesser operating costs concerning aerobic granular sludges (AGS) and microalgae consortia. This review will improve the understanding of the operation of ABGS systems and thus further expand possible operating combinations that help to enhance microbial interactions, microalgae growth and external aeration self-sufficiency in further research with a focus on its scaling up. 相似文献
42.
Cianca Ernestina Angelaccio Michele Luglio Michele Ruggieri Marina Daponte Pasquale Lojacono Roberto Prasad Ramjee 《Wireless Personal Communications》2002,23(1):77-92
A satellite communication system is an excellent candidate toprovide broadband integrated Internet services to globallyscattered users. The inter-operation between a satellite systemand the existing terrestrial Internet infrastructure introducesnew challenges at different layers. Automatic Repeat reQuest (ARQ)techniques have been introduced at radio link layer to improve theperformance of Transport Control Protocol (TCP)/IP over wirelessterrestrial links, but these techniques are usually dismissed inpresence of high latency links such as satellite links. In thispaper, we will show that a truncated power control can effectivelyimprove the trade-off delay-residual error after retransmissionsand makes ARQ techniques a feasible solution for error control insatellite links. Furthermore, mobility management issues inpresence of satellite diversity are addressed. Performance of anInter-Segment Hand-Over (ISHO) procedure, in terms of propagationdelay, will be carried out through simulation for different spacesegment configurations. 相似文献
43.
Ernestina Dubini-Paglia Pier Luigi Beltrame Bruno Marcandalli Alberto Seves Loredana Vicini 《应用聚合物科学杂志》1988,36(3):635-643
The thermal cis-trans isomerization of 3′-nitro-4-diethylaminoazobenzene in seven polyethyleneoxides at different molecular weight has been studied kinetically in the temperature range 35–70°C. The dependence of the reaction rate on the polymer polarity and viscosity is discussed. The kinetics of the isomerization of the dye dispersed in the fluid polymeric matrix was found to be a useful probe of the structural features of the polymer. 相似文献
44.
CRISP-DM is the standard to develop Data Mining projects. CRISP-DM proposes processes and tasks that you have to carry out to develop a Data Mining project. A task proposed by CRISP-DM is the cost estimation of the Data Mining project. 相似文献
45.
Thermal cis–trans isomerization of azo dye chrysophenine in cellulose matrices: Effect of morphology
Alberto Seves Maria Roman Ernestina Dubini-Paglia Pier Luigi Beltrame Bruno Marcandalli 《应用聚合物科学杂志》1991,43(10):1821-1825
Films obtained from native cellulose synthesized by Acetobacter xylinum and from cellulose obtained from cuproammoniacal solutions (cellulose II) were morphologically characterized by studying the cis-trans isomerization of azo dye Chrysophenine dispersed in their amorphous region. The kinetic measurements of the reaction showed that both films behave as glassy polymers in the temperature range explored (36–66°C). In going from native cellulose to cuproammoniacal cellulose, an increase of the isomerization rate was observed, revealing a more homogeneous distribution and likely larger extent of free volume in the amorphous phase of cellulose II. 相似文献
46.
Cristina Alamprese Ernestina Casiraghi Margherita Rossi 《International Journal of Food Science & Technology》2012,47(7):1411-1420
The aim of this work was to study the foaming, gelling and rheological properties of albumen as simultaneously affected by the housing system (i.e. conventional cage, organic and barn) and the age of layers (27, 30, 35, 43, 53 and 68 weeks). Significant effects of the two considered factors and of their interactions were found for almost all the studied properties. In particular, with the increasing of the hen age, a loss in albumen consistency and a weakening of the albumen gel structure were observed. As regards the housing system, differences observed, even if statistically significant, were little and unlikely to have a real effect on technological performances of the eggs when used as food ingredients. Significant correlations amongst technological properties of albumen and its pH and protein content were also found. 相似文献
47.
Alberto Seves Giovanni Testa Anna Maria Bonfatti Ernestina Dubini Paglia Elena Selli Bruno Marcandalli 《大分子材料与工程》2001,286(9):524-528
Water molecules retained in native cellulose gels obtained from Acetobacter xylinum (AX) were displaced by poly(ethylene glycol)s (PEG) of different molecular weight. The so obtained native cellulose/PEG material, characterized in film form by differential scanning calorimetry, dynamic mechanical thermal analysis and wide angle X‐ray scattering, revealed that strong interactions occur between PEG and cellulose and that the polymer mixture is in the rubbery state at ambient temperature. Moreover, it could be dyed in supercritical carbon dioxide by disperse dyes, thus exhibiting typically lipophilic properties and suitability to be employed as a biocompatible support for lipophilic active species. 相似文献
48.
N Barzaghi 《Canadian Metallurgical Quarterly》1998,24(11):1233-1234
49.
Silvia Concetta Colucci Cinzia Buccoliero Lorenzo Sanesi Mariella Errede Graziana Colaianni Tiziana Annese Mohd Parvez Khan Roberta Zerlotin Manuela Dicarlo Ernestina Schipani Kenneth M. Kozloff Maria Grano 《International journal of molecular sciences》2021,22(19)
To date, pharmacological strategies designed to accelerate bone fracture healing are lacking. We subjected 8-week-old C57BL/6 male mice to closed, transverse, mid-diaphyseal tibial fractures and treated them with intraperitoneal injection of a vehicle or r-irisin (100 µg/kg/weekly) immediately following fracture for 10 days or 28 days. Histological analysis of the cartilaginous callus at 10 days showed a threefold increase in Collagen Type X (p = 0.0012) and a reduced content of proteoglycans (40%; p = 0.0018). Osteoclast count within the callus showed a 2.4-fold increase compared with untreated mice (p = 0.026), indicating a more advanced stage of endochondral ossification of the callus during the early stage of fracture repair. Further evidence that irisin induced the transition of cartilage callus into bony callus was provided by a twofold reduction in the expression of SOX9 (p = 0.0058) and a 2.2-fold increase in RUNX2 (p = 0.0137). Twenty-eight days post-fracture, microCT analyses showed that total callus volume and bone volume were increased by 68% (p = 0.0003) and 67% (p = 0.0093), respectively, and bone mineral content was 74% higher (p = 0.0012) in irisin-treated mice than in controls. Our findings suggest that irisin promotes bone formation in the bony callus and accelerates the fracture repair process, suggesting a possible use as a novel pharmacologic modulator of fracture healing. 相似文献
50.
Ernestina Dubini-Paglia Pier Luigi Beltrame Bruno Marcandalli Paolo Carniti Alberto Seves Loredana Vicini 《应用聚合物科学杂志》1986,31(5):1251-1260
The thermal cis-trans isomerization of azo dyes XC6H4N=NC6H4N(C2H5)2 (where X is H, OCH3, CN, and NO2) in poly(ethylene terephthalate) matrices, below the glass transition temperature, and in dibutylphthalate solutions has been studied kinetically in the temperature range 20–60°C. Kinetic behavior in the polymer is characterized by two or three simultaneous first-order processes with similar activation enthalpies. These processes reflect an unequal distribution of “tie-molecules,” “folds,” and “cilia” in the amorphous region of the polymer. Lightfastness of the dyes in poly(ethylene terephthalate) films has been investigated. Polymer morphology strongly affected the photofading, but no significant influence was observed in the kinetic experiments. 相似文献