The phrase "we expand upon" is correct and usable in written English.
You can use it when you want to emphasize that you are providing more details or further elaboration on a certain topic. For example: "We expand upon the methods by which we process customer requests in the following section."
In this work, we expand upon past work relating the nanostructure and oxidative reactivity of soot.
In this paper we expand upon an existing approach to design wildlife corridors through habitat quality assessment.
We expand upon these works by providing a relative measure of the sensitivity of model parameters and prediction to common sources of error, bias, and variability.
Here we expand upon experiment-1 by monitoring memory performance on task-A for five consecutive days while the interference conditions also receive daily training on a novel interference task (B, C, and D) over days 2 4 (Fig. 3).
Herein, we expand upon the findings of Pospíšilová et al. [30] regarding preparation of novel transgenic barley lines overexpressing cytokinin dehydrogenase 1 gene from Arabidopsis under the control of mild root-specific promotor of maize β-glycosidase.
We expand upon these themes by identifying: (a) the state of the art; (b) knowledge gaps; and (c) suggested research directions to advance warning capabilities for extreme hydrogeomorphic processes.
We expand upon previous models of the jets, inferring that the X-ray emission arises less than 2 * 10^12 cm from the formation region and cools rapidly into clumps that travel ballistically beyond 10^17 cm.
We expand upon geomorphic mapping procedures developed for a subregion of the ACP of northern Alaska on the Barrow Peninsula (1800 km2)5, using a novel automated object based image analysis (OBIA) approach for tundra geomorphic mapping across the ACP (58,691 km2).
Here, we expand upon our prior work by including a novel crowdsourced data set of responses to our predefined top 15 SRS-derived questions from parents of children with ASD (n=248) or ADHD (n=174) to improve our model's capability to generalize to new, 'real-world' data.
We expand upon the standard methodology in the literature by further exploring the treatment effects estimated with Eq. 1.
In this study, we expand upon the work of Luo et al. by characterizing arsenic sulfide pigments used in Japanese woodblock prints dated to 1833 1834.
