The phrase "demarcation by" is grammatically correct and can be used in written English
It is typically used to indicate a clear separation or boundary between two things. Example: The demarcation by the river serves as a natural border between the two countries.
He broke down job demarcation by encouraging subeditors to write – with fine results – and showcased the work of Denis Thorpe and Don McPhee, two of the most lauded press photographers in the UK, as well as the likes of the art critic Waldemar Januszczak.
On an analytical demarcation, by contrast, whether particular resources are logical depends only on whether they have the favored property.
Hasan (2001) reported, due to half-hearted demarcation by government officials, guzara and state forests are facing serious threats of illegal encroachment (see Figure 6).
We emphasize that the cytoarchitectonic areas determined by Nissl-GLI are well consistent with the expression patterns of the layer-specific genes, validating the area demarcation by our method.
We thus examined the effects of read depth on domain demarcation by changepoint detection.
Prior reviews have reflected the traditional mental health service system demarcation by focussing on outcome measures used with either children and adolescents or with adults [ 22, 29].
Finer-scale demarcations by drainage and some spawning groups also are recovered, similar to results from the analyses using pairwise comparisons, Geneclass, and AMOVA.
The margin created thus softens and articulates the razor-thin line of demarcation offered by architecture (Habraken 2000).
In contrast to neutrophil infiltration in mammals, which often leads to the formation of abscesses and tissue destruction, heterophil infiltration in birds is resolved by demarcation of necrotic heterophils (and pathogens) by epithelioid macrophages and fibroblasts.
Scoring was restricted to cancer cells by demarcation of the tumor area on the H&E stained slides by two breast cancer pathologists (PW, WO).
Next, we analyzed the xenografts and discovered a striking difference between the control GFP and MEKWT tumors and the MEK1 tumorsinsRtheumors: in the control tumors, the demarcations were well defined by the stromal tissue of mainly collagen (stained by Sirius red histochemistry, Fig 5D), whereas the MEK1 tumorsinsRT tumors were incompletely demarcated by surrounding stromal tissue (Fig 5D).
