The phrase "are further upstream" is correct and usable in written English.
It can be used in contexts discussing processes, systems, or locations that are situated at an earlier stage or higher point in a flow or hierarchy.
Example: "The issues we are facing in production are further upstream in the supply chain, affecting our overall efficiency."
Alternatives: "are located earlier in the process" or "are positioned higher in the hierarchy."
Because LPs are further upstream in the market, they've often built a breadth of relationships that makes a range of introductions possible.
The geometric complexity takes the form of the thickening devices which are further upstream again from the inlet boundary.
A number of known regulated genes (e.g. PNMT, GILZ) were simply lacking either because functional HREs occur singly (or as pairs at an inter-HRE distance >200 bp), do not match our consensus, are located in intronic regions [16], [34], [35], [36], are further upstream than 10 kb [16], or occur in repeat DNA.
We're forming values, and to be able to do that through entertainment, which is further upstream from politics, is huge".
Although both CO and H2 diffuse over the burner rim and move upstream into the oxidizer stream, the attachment point of a H2-rich syngas flame is further upstream below the burner exit than that of a CO-rich flame.
Another place where pioneers crossed the Snake was further upstream, at a place called "Three Island Crossing", near the mouth of the Boise River.
One would expect that the translation start site would be further upstream in both strains.
Perhaps the causative differences of expression were further upstream [ 47] or caused by an indel.
Some steps of the fatty acid biosynthesis pathway, which is further upstream of the wax decarnylation pathway, were also impacted in the mutant leaf tissues [ 4].
The second TATA box is further upstream and is linked to several MYC binding sites, as well as a wound-inducible element [ 36] and an element associated with hypoosmolarity responsiveness [ 37].
Some of the individual deletions extend far enough upstream to include the NPIP gene as well as the five 3' most exons of the NOMO1 gene which is further upstream.
