Estimation of the optimum size of banana plantations in Nubaria

Labelling yield and radiochemical purity, higher than 95%, of 99mTc-colloid preparations were determined by using the paper chromatography method. Less than 3% of labelled citric acid, added to the preparation as a buffer solution, has been found in 99mTc-sulphur colloid. High radiochemical purity and optimum size of colloid particles has also been proved by biodistribution studies on experimental animals. The analysis performed has shown that more than 50% of 99mTc-colloid preparations excreted by urine is 99mTcO–, the remaining past 50% being protein bound 99mTc. Biological half-time of excretion of the fast phase is the same for both preparations, i.e. 10 min, while for the slow component it is 120 min in 99mTc-S-colloid and 160 min in 99mTc-Sn colloid.

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The Temperature-Phased Anaerobic Biofilter Process

Water Science & Technology ◽

10.2166/wst.1994.0483 ◽

1994 ◽

Vol 29 (9) ◽

pp. 213-223 ◽

Cited By ~ 5

Author(s):

Sandra K. Kaiser ◽

Richard R. Dague

Keyword(s):

System Performance ◽

Anaerobic Treatment ◽

Size Ratio ◽

High Rate ◽

Phase System ◽

Optimum Size ◽

Treatment Technology ◽

Two Phase ◽

In Series ◽

Two Temperature

The “temperature-phased anaerobic biofilter” or TPAB process (U.S. Patent pending), is a new high-rate anaerobic treatment system that includes a thermophilic (56°C) biofilter connected in series with a mesophilic (35°C) biofilter providing for two-temperature, two-phase treatment. Three TPAB systems of different thermophilic:mesophilic reactor size ratios were operated at system HRTs of 24 hrs, 36 hrs, and 48 hrs to characterize performance and to determine if an optimum size ratio exists between the thermophilic and mesophilic phases. The three TPAB systems achieved SCOD reductions in excess of 97% and TCOD reductions in excess of 90% for a synthetic milk substrate over a range of system COD loadings from 2 g COD/L/day to 16 g COD/L/day. There was little difference in performance between the three TPAB systems based on COD reduction and methane production. The 1:7 ratio of thermophilic:mesophilic phase TPAB system performed as well as the 1:3 and 1:1 size ratio TPAB systems. In applications of the process, a relatively small thermophilic first-phase can be used without sacrificing overall two-phase system performance. The TPAB process is a promising new anaerobic treatment technology with the ability to achieve higher efficiencies of organic removals than is generally possible for single-stage anaerobic filter systems operated at equivalent HRTs and organic loadings.

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The optimum size of pet prosthetic for additive manufacturing

Materials Today Proceedings ◽

10.1016/j.matpr.2021.02.551 ◽

2021 ◽

Author(s):

R. Ourihi ◽

H. Fihri-Fassi ◽

F. El-Hilali

Keyword(s):

Additive Manufacturing ◽

Optimum Size

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Size of Animal in Relation to Productivity Nutritional aspects

Proceedings of the British Society of Animal Production (1972) ◽

10.1017/s0308229600000271 ◽

1973 ◽

Vol 2 ◽

pp. 27-34 ◽

Cited By ~ 7

Author(s):

W. Holmes

Keyword(s):

Energy Use ◽

The Other ◽

Farm Animals ◽

Optimum Size ◽

Breeding Populations ◽

Limiting Nutrient

With our increased knowledge of genetics and our ability to control breeding populations of farm animals we are now in a position to select for optimum size if we can define it. A consideration of size in relation to nutritional efficiency therefore becomes relevant. (I confine myself to nutritional efficiency since this was my remit, but of course there are many non-nutritional aspects of productivity which also may be related to size, e.g. larger animals need less labour or housing per unit of production; smaller animals may yield more suitable carcasses for some markets, and these may indeed be more important economically than nutritional efficiency.) Nutritional efficiency will be considered in relation to energy use, since energy is normally the limiting nutrient, and the concentration of the other nutrients, proteins, minerals and vitamins can be varied by adding supplements to the diet.

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A novel approach of tri-objective optimization for a building energy system with thermal energy storage to determine the optimum size of energy suppliers

Sustainable Energy Technologies and Assessments ◽

10.1016/j.seta.2021.101379 ◽

2021 ◽

Vol 47 ◽

pp. 101379

Author(s):

Sadegh Nikbakht Naserabad ◽

Roohollah Rafee ◽

Seyfolah Saedodin ◽

Pouria Ahmadi

Keyword(s):

Energy Storage ◽

Thermal Energy ◽

Thermal Energy Storage ◽

Energy System ◽

Building Energy ◽

Optimum Size ◽

Novel Approach ◽

Building Energy System

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The snake community of Serra do Mendanha, in Rio de Janeiro State, southeastern Brazil: composition, abundance, richness and diversity in areas with different conservation degrees

Brazilian Journal of Biology ◽

10.1590/s1519-69842009000400006 ◽

2009 ◽

Vol 69 (3) ◽

pp. 795-804 ◽

Cited By ~ 14

Author(s):

JAL. Pontes ◽

RC. Pontes ◽

CFD. Rocha

Keyword(s):

Rio De Janeiro ◽

Secondary Forest ◽

Southeastern Brazil ◽

Future Research ◽

Native Forest ◽

Abundance Distribution ◽

Forested Areas ◽

Undisturbed Forest ◽

Banana Plantations ◽

Janeiro State

We studied and compared parameters of the snake community of the Serra do Mendanha, Rio de Janeiro State, southeastern Brazil (22º 48'-22º 51' S and 43º 31'-43º 28' W), such as: abundance distribution, richness, species diversity and biomass, between forested areas, areas under regeneration and agriculture areas (banana plantations); to obtain information about the natural history and facilitate the development of future research. For capturing the snakes we used: pitfall traps, drift-fences and visual search (diurnal and nocturnal) along four transects for each habitat. The captured snakes were measured with a tape and caliper, weighed with dynamometers and sexed with the use of a catheter. The animals marked (with ventral scales cut) were released for posterior recapture. One individual per species was fixed and deposited at the Museu Nacional, Rio de Janeiro. We undertook an effort of 840 man/hour, and captured a total of 207 snakes belonging to 25 species (Colubridae 80.2%, Elapidae 12.6%, Viperidae 6.3% and Boidae 0.9%). The most abundant were: Liophis miliaris (n = 33), Micrurus corallinus and Chironius fuscus (both with n = 26); the least abundant: Elapomorphus quinquelineatus, Siphlophis compressus and Tropidodryas serra (all with n = 1). The species that contributed the greatest biomass were Spilotes pullatus (7,925 g), Chironius laevicollis (4,694 g), Liophis miliaris (3,675 g) and Pseustes sulphureus (3,050 g); those that contributed the lowest biomass were: Siphlophis compressus, Tropidodryas serra (both with 4 g) and Elapomorphus quinquelineatus (3 g). We found significant differences between the sampled habitats at the Serra do Mendanha (undisturbed forest, secondary forest and banana plantations). The results showed that a great reduction in the abundance, richness, diversity and biomass of the snakes occurs when the native forest is replaced by banana plantations.

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