Yolk mass variation in White-Rumped Swallows (Tachycineta leucorrhoa)

2014 ◽  
Vol 126 (1) ◽  
pp. 86-93 ◽  
Author(s):  
Melina Barrionuevo ◽  
Florencia Bulit ◽  
Viviana Massoni
Keyword(s):  
Yolk Mass ◽  
Mass Variation

New approaches for the determination of dextran in the sugar production process

2018 ◽  
pp. 138-146 ◽  
Author(s):  
Karin Abraham ◽  
Eckhard Flöter
Keyword(s):  
Molecular Mass ◽  
Mass Distribution ◽  
Molecular Mass Distribution ◽  
Molecular Size ◽  
Mass Variation ◽  
Negative Effects ◽  
New Approaches ◽  
Precise Knowledge ◽  
Enzyme Application

The presence of polysaccharides in cane and beet raw juices causes several negative effects during the sugar manufacture. These are usually mitigated by enzymatic decomposition of dextrans. Such effects not only depend on the content, but also on the molecular mass distribution. This means that the different dextran fractions specifically affect the process. An accurate process control hence requires the most precise knowledge about the existing content and the molecular mass distribution present. A detailed understanding of the specific processing problems and also a targeted enzyme application hence requires the determination of a total dextran content and also its characterization including the differentiation between the different dextran fractions. An accurate analytical tool which equally satisfies industrial applicability is still lacking. To improve on this situation, two new approaches for the determination of dextran were developed and benchmarked against the commonly used and established Haze Method, which is rather inaccurate and also sensitive to molecular mass variation. The two new approaches are both based on polarimetry. These two methods indicate to be superior over the Haze Method with respect two molecular mass variation and hence enable the determination of a broader molecular size range including also low molecular mass dextrans.

Parameter-dependent actuator fault estimation for vehicle active suspension systems based on RBFNN

2021 ◽  
pp. 095440702199301
Author(s):  
Wenping Xue ◽  
Pan Jin ◽  
Kangji Li
Keyword(s):  
Fault Tolerant ◽  
External Disturbance ◽  
Active Suspension ◽  
Fault Estimation ◽  
Linear Matrix ◽  
Actuator Fault ◽  
Mass Variation ◽  
Fe Method ◽  
Comparison Results ◽  
Parameter Dependent

The actuator fault estimation (FE) problem is addressed in this study for the quarter-car active suspension system (ASS) with consideration of the sprung mass variation. Firstly, the ASS is modeled as a parameter-dependent system with actuator fault and external disturbance input. Then, a parameter-dependent FE observer is designed by using the radial basis function neural network (RBFNN) to approximate the actuator fault. In addition, the design conditions are turned into a linear matrix inequality (LMI) problem which can be easily solved with the aid of LMI toolbox. Finally, simulation and comparison results are given to show the accuracy and rapidity of the proposed FE method, as well as good adaptability against the sprung mass variation. Moreover, a simple FE-based active fault-tolerant control (AFTC) strategy is provided to further demonstrate the effectiveness and applicability of the proposed FE method.

Evaluation of annual and semiannual total mass variation over the Mediterranean Sea from satellite data

2021 ◽  
Vol 14 (10) ◽  
Author(s):  
Nadia AbouAly ◽  
Karem Abdelmohsen ◽  
Matthias Becker ◽  
Abdel-Monem S. Mohamed ◽  
Abotalib Z. Abotalib ◽  
...  
Keyword(s):  
Mediterranean Sea ◽  
Satellite Data ◽  
Total Mass ◽  
Mass Variation ◽  
The Mediterranean

scholarly journals Sensitivity of hyperfine structure to nuclear radius and quark mass variation

2009 ◽  
Vol 79 (5) ◽  
Author(s):  
T. H. Dinh ◽  
A. Dunning ◽  
V. A. Dzuba ◽  
V. V. Flambaum
Keyword(s):  
Hyperfine Structure ◽  
Quark Mass ◽  
Nuclear Radius ◽  
Mass Variation

Propagation of solitons in hydrogen-bonded chains with mass variation

1997 ◽  
Vol 56 (1) ◽  
pp. 1088-1096 ◽  
Author(s):  
G. Kalosakas ◽  
A. V. Zolotaryuk ◽  
G. P. Tsironis ◽  
E. N. Economou
Keyword(s):  
Mass Variation ◽  
Hydrogen Bonded

scholarly journals Non-structural carbohydrate metabolism and postharvest conservation of gerbera flowers

2017 ◽  
Vol 23 (3) ◽  
pp. 329
Author(s):  
Ana Maria Oliveira Souza Alves ◽  
Jaianne Francielle Oliveira Santos Pimentel ◽  
Gustavo Ferreira Da Silva ◽  
Nilbe Carla Mapeli ◽  
Ana Maria Mapeli
Keyword(s):  
Carbohydrate Metabolism ◽  
Floral Development ◽  
Distilled Water ◽  
Mass Variation ◽  
Solution Ph ◽  
Significant Difference ◽  
Structural Carbohydrate ◽  
Postharvest Handling ◽  
E6 And E7 ◽  
Preservative Solutions

The species Gerbera jamesonii Adlam has great economic importance in the ornamental sector, due to exuberance of floral stems. However, florists face some challenges such as postharvest handling and difficulty of conservation. Therefore, this study aimed to characterize the non-structural carbohydrate content in different floral stages of G. jamesonii var. Dawn and evaluate the effect of preservative solutions during the postharvest storage of this species. For this purpose, it was quantified TSS, RS and NRS from the seven stages of gerbera stems ontogeny (E1, E2, E3, E4, E5, E6 and E7). The preservative solutions used were: T1) distilled water; T2) citric acid (100 mg L-1); T3) glucose (20 g L-1); T4) gibberellic acid (GA3 , 5 mg L-1); T5) calcium chloride (CaCl2 , 20g L-1) and T6) Sodium Thiosulphate (STS, 20 mM). The effect of preservative solutions were assessed daily, considering the longevity of flowers, variation in the absorption of preservative solution, pH of the solution and fresh mass variation. The experimental design was completely randomized with four replicates. There was a difference in carbohydrate metabolism during floral opening and senescence. In the orange bracts there was a lower TSS content, while in the inflorescences it was observed a reduction in the yellowish, greenish-green and greenish stages. The content of RS increased in the bracts, whereas in the inflorescence there was no difference. The NRS content was higher in the orange bracts, showing lower rates in the inflorescences in yellowish and yellowish greenish stages. The preservative solutions had an impact, on the floral stem longevity, varying according to the solutions used, i.e. CaCl2 and STS reduced the durability of gerbera flower in 9.25 and 11.5 days, respectively, compared to stems kept in distilled water. The glucose solution did not promote a significant difference compared to water. Therefore, we conclude that there is variation in the metabolism of non-structural carbohydrates during the floral development of G. jamesonii var. Dawn and the tested solutions were not effective in promoting postharvest conservation of gerbera.

Effect of Daily Body Mass Variation on the Foraging Behaviour of Tit Species (Parus spp.)

Ethology ◽  
2003 ◽  
Vol 109 (12) ◽  
pp. 971-979 ◽  
Author(s):  
Marta Barluenga ◽  
Andrés Barbosa ◽  
Eulalia Moreno
Keyword(s):  
Body Mass ◽  
Foraging Behaviour ◽  
Mass Variation
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