The phrase "accumulation of substance" is correct and usable in written English.
It can be used in contexts discussing the gathering or collection of material or elements, often in scientific or philosophical discussions.
Example: "The accumulation of substance in the laboratory led to significant breakthroughs in the research."
Alternatives: "collection of material" or "gathering of matter."
Clearance values that are positive relate to accumulation of substance from the system; negative clearance values represent removal of substance from the system.
Accordingly, substance S is subject to natural selection, which means that the pace of accumulation of substance S can be manipulated by natural selection to postpone or forestall the action of potentially deleterious state-specific genes (Fig. 1).
SBS = simulated blood solution; UFR = ultrafiltration rate; Khd = hemodialysis elimination rate; % = percent; † = Clearance values that are positive relate to accumulation of substance from the system; negative clearance values represent removal of substance In general, no iron or insignificant levels in the case of iron dextran was lost from the SBS reservoir for either iron product.
SBS = simulated blood solution; UFR = ultrafiltration rate; Khd = hemodialysis elimination rate; % = percent; † = Clearance values that are positive relate to accumulation of substance from the system; negative clearance values represent removal of substance Intravenous iron is frequently given to HD patients to treat or prevent iron deficiency anemia[ 1].
A monoexponential model was assumed and pharmacokinetic parameters were calculated using the following formulae: 1. Elimination rate constant for HD period (Khd) was calculated: A positive rate constant Khd suggests accumulation of substance in the tank; whereas a negative rate constant Khd suggests removal of substance from the tank.
Lysosomal diseases are caused by the accumulation of substances that are normally metabolized in the cellular structures called lysosomes.
Many of the conditions mentioned in this and the next section are caused by a genetically determined enzyme failure within cells, which leads to the accumulation of substances that would normally be metabolized.
Several major diseases of old age, including atherosclerosis, macular degeneration and neurodegenerative diseases are associated with the intracellular accumulation of substances that impair cellular function and viability.
The low percentage of mature seed germination observed in Cephalanthera falcata is attributed to the accumulation of substances such as lignin in the inner integument, a possible cause of germination inhibition (Yamazaki and Miyoshi 2006).
This effect may stimulate the synthesis and accumulation of substances that regulate osmotic adjustment in order to reduce the loss of water content of tomato seedlings and remit the damage caused by salinity-alkalinity stress.
HIGH accumulation RAS was designed for maximal accumulation of substances in the water by operating the system at nearly-closed conditions (30 L/kg feed/d), using mature biofilters and high feed loads; and (2) LOW accumulation RAS was designed to be a proxy for flow-through systems by operating at high water exchange rates (1500 L/kg feed/d), new biofilters and low feed load.
