The phrase "absent in the study" is correct and usable in written English.
It can be used to indicate that something or someone is not present or included in a particular study or research context.
Example: "The results showed that certain variables were absent in the study, which may have affected the overall findings."
Alternatives: "missing from the study" or "not included in the study".
The Bayanhua Group contains three formations, including the Aershan, Saihantala, and Hadatu Formations, which, however are absent in the study area (Sha 2007).
Compared with the typical section, the Fengjiawan Formation is absent in the study area, and the thicknesses of Longjiayuan Formation and Xunjiansi Formation are greater (Figs. 1, 2).
Since large rivers are absent in the study area, the source of these sediments may be associated with recent anthropogenic activities (tin mining, deforestation, earthworks), or local small river and creek flooding during the rainy season.
Because the upper limit of C. gigas, which is absent in the study site, is the same as that of S. kegaki, the values + 0.8 and + 0.4 m amsl were used for C. gigas.
In contrast to findings from places in the Global North that have experienced a similar tourism and amenity boom, conflicts over landscape aesthetics and environmental protection are virtually absent in the study area.
Finally, considering the validated high efficiency of MPs for P removal, and in the context of a future whole-lake application, it is essential to restrict the use of MPs to the moments when D. magna is absent in the study site.
Taking these considerations into account, the weak bands at 795, 695 and 586 cm−1 were assigned as predominantly bending Si O Si vibrations whereas the strong band beyond 586 cm−1 (absent in the studied non-hydroxide pyroxenes) probably is a result of out-of-plane bending OH vibrations.
The NOS2 -1173C/T polymorphism was absent in the studied population.
Genotypes -1173CT and -1173TT were absent in the studied population.
Our results show that the use of the mix control approach provide more discriminatory LR distributions, and, consequently, less errors in the classification of genes as present or absent in the studied strain.
In contrast, strains belonging to ST361 and ST728 that were present in 2001-2003 were absent in this study highlighting the evolving nature of CA-MRSA isolates.
