Previous research

In previous researches it was shown that new phenomenological models are available to approximation any analytical peaks. These models can be used for modelling analytical experiments. 

A good review of a field will often give interesting and useful ideas to older scientists, already knowledgable in other fields. Other scientists in the same field as that being reviewed can usually profit from careful study of a review, because the writer and the reader have different backgrounds, different evaluations of the relative importance of previous researches, and different ideas as to what should be done next. 

The agreement between doaic4. and d0b . given in Table IV of the previous research is such as to indicate a probable error somewhat greater than 0.1% in the spec-trometric observations reported. 

In the cases we discussed above, students revealed their lack of knowledge of the random distribution of particles, which was consistent with much previous research. This study not only revealed the mis-representation of the diffusion of gases, but also showed the inconsistent mental models that the students held while solving the problems. The result provided some evidence in favor of research that attributes students learning in relation to the context while facing various types of questions. However, this result does not support Vosniadou s framework theory (1994), which implies a consistent mental model used by learners in her study. 

The mechanism of TFL can be summarized to the ordered him lubrication, concluded from previous researches. It should be noted that the property and mechanism of TFL are not fully understood to date, and there remains a wide blank area to be covered between experiments and theoretical predictions and it leaves a far cry to achieve predictive ability. Some key problems associated with theoretical modeling which need to be addressed are ... 

In order to improve the tribological properties of molecular films, molecular surface modification is the first choice to make an approach. A Diblock polymer polystyrene-poly(ethylene)oxide (PS-PEO) thin-films were studied in our previous research because of its interesting structure (one... 

The friction coefficient of Sample 2 is quite different from the other samples this can be attributed to the surface difference. The previous research shows that the friction coefficient of DLC is related to the deposition parameter [29]. In this study, in order to evaluate the surface properties in the same condition, we designed Layer A as the outermost layer for all the multilayer samples. Among all the samples, only the surface of Sample 2 is from Layer B. 

Failing to present data that contradict one s own previous research... 

This paper begins with a brief description of pectin structure and an overview of the general mechanism of cell wall polysaccharide biosynthesis. This is followed by a summary of previous research on PGA-GalAT and a description of a facile method to synthesize UDP-[ Cj-galacturonic acid. Finally, the paper ends with a summary of our work on the identificadon, partial characterization, and initial solubilization of the homogalacturonan biosynthetic enzyme PGA-GalAT. 

The substrate for HGA synthesis is UDP-D-galacturonic acid (UDP-GalA) (81). UDP-GalA has been isolated from plants (59) and several pathways for its synthesis in planta have been reported (31). In vitro studies on pectin biosynthesis have been hampered since radiolabeled UDP-galacturonic acid is not commercially available. Previous researchers have used several... 

Data on the pectin content of the initial material (AUAC and DE) is presented in Table 1. It is evident that the main difference between the two lots of oranges was in their anhydrouronic acid content. Observations from previous research (1) were confirmed that microwave heating of the fresh material ensured better drying conditions by inactivating pectolitic enzymes, particularly pectinesterase. Thus a better retention of the degree of esterification of pectin was ensured. 

Previous research by our groiqD [6] has confirmed literature reports [1,2] that it is possible to photolyze methane, saturated with water vapcff, to produce methanol and hydrogen. In a modification of the above ejq)eriment, we were also able to photolyze methane sparged throu a photochemical reactor filled with water. Recently, we began investigating the photocatalytic conversion of methane in water. 

After purification, the bimetallic nanoparticles are offered to characterization. The characterization techniques were well reviewed previously in literatures [1,2]. In this section, we highlight recent reports on the characterization methods of bimetallic nanoparticles after presenting some previous researches again. 

One interesting question posed by previous researchers (14,19) is why there was asphaltic bitumen deposited at the bottom of the well considering that no phase change or any substantial temperature or pressure changes had taken place. The conclusion was that the question... 

This chapter examines another measure of the space used by 2D separations subject to correlation. Some researchers use the words, peak capacity, to express the maximum number of zones separable under specific experimental conditions, regardless of what fraction of the space is used. By definition, however, the peak capacity is the maximum number of separable zones in the entire space. No substantive reason exists to change this definition. The ability to use the space, however, depends on correlation. In deference to previous researchers (Liu et al., 1995 Gilar et al., 2005b), the author adopts the term, practical peak capacity, to describe the used space. The practical peak capacity is the peak capacity, when the separation mechanisms are orthogonal, but is less than the peak capacity when they are not. The subsequent discussion is based on practical peak capacity. 

In our previous research, we found that the antialgal allelochemical Ethyl 2-Methylacetoacetate (EMA) caused loss of cell membrane integrity. It hinted that EMA may cause a change in the membrane. It is reported that environmental stress may increase the concentration of ROS in plant cell. The excessive ROS may cause a decrease of antioxidation enzymes activity and lipid peroxidation. The effect of EMA on the activity of SOD and POD and lipid fatty acids of Chlorella pyrenoidosa, Chlorella vulagaris and Microcystis aeruginosa were evaluated to elucidate the mode of action of EMA. 

Compare the taxon base rate to previous research and clinical experience. 

Our previous research has shown that application of the critical load technique allows the researcher to carried out the quantitative estimate of potential loading of atmotechnogenic pollutants due to gas pipeline work at different ecosystems in the boundaries of vast areas in north and central Eurasia (Bashkin et al., 1999, 2002). 

Assuming that both previous research questions can be scientifically founded, a better understanding of why accidents still occur despite all existing measures can be obtained. From both the previous questions the third research question can be derived, which is formulated as ... 

Much of the previous research on the role of early olfactory experience on adult odor preferences has used the approach of cross-fostering young pups to a lactating dam of a different species (D Udine 1983). Thus, a shift in preference toward odor of the foster parent indicates that species-specific odors are learned via the early experience with the foster parent. Several important themes have emerged from this literature that shed light on the degree to which species preference is learned during early life. 

The structure of this review is as follows. Section II focuses on the basic principles of MRI techniques, and then more advanced techniques which have been used to study catalytic reactors will be introduced in Section III. To illustrate the use of these techniques examples will be given from the field of catalysis, although not necessarily at the scale of the reactor and, in some cases, data for model systems will be shown. Section IV describes methods used to achieve chemical mapping. Section V focuses exclusively on previous research which has used MRI techniques to spatially resolve chemical composition in fixed-bed reactors. 

During the last decade, a number of investigators have attempted to elucidate the mechanism by which protein consumption induces hypercalciuria. In our previous research, the calciuria could not be explained by increased intestinal absorption of calcium, complexing with sulfur amino acids, or urinary acid production. 

Pumpkin Quick Bread, Previous research yielded legume breads and bread products with decreased flavor, volume, and color values (14,30-31). The present research attempted to overcome these... 

---