Water productivity

The purposes of this paper are to identify strategies for improving water quality management in households practicing aquaculture and to understand the role gender plays in water management in the Mekong Delta.

16p vibecca 01-10-2024 8 2   Download

The objective of this study was to investigate the production of spinach concentrate. The research has shown that several factors affect the concentration process, including the ratio of vegetables to water in the grinding process, the content of potatoes mixed into the product, and the time of concentration.

7p viyamanaka 06-02-2025 2 2   Download

Currently, to monitor water quality, farmers in Vietnam need to analyze various indicators which increase production costs. In addition, the limitation of analytical facilities and techniques is a challenge. The objective of this experiment was to evaluate the influence of water quality parameters on shrimp growth rates and the seasonal fluctuation in water quality.

15p tuetuebinhan000 23-01-2025 2 2   Download

The quantity of rice straw and straw management survey only did in WinterSpring and Fall-Winter crops in An Giang, Dong Thap, Kien Giang province and Can Tho City. The research focused on the evaluation of simply biological pretreatment, material size and mixing rate of rice straw/hyacinth with pig manure in anaerobic batch and semi-continuous condition in vitro; trial producing biogas in polyethylene digester type (PE) in household scale in vivo

24p beloveinhouse10 28-11-2021 19 3   Download

The purpose of the dissertation: Create low molecular weight, water-soluble chitosan with antifungal ability from chitosan by the degradation method by hydrogen peroxide agent to prevent effectly the anthracnose on post-harvest fruit and vegetables (mango, banana and chili pepper)

34p tunelove 11-06-2021 43 3   Download

The research goals of the thesis: Preparation and characterization of activated carbon products denaturated by surface oxidation technics. Determination of cation exchange capacity of the materials. Investigation of Mn and Fe linking on surface of prepared materials to form a new adsorption material for effective removing hazard anions in water environment.

26p extraenglish 24-05-2021 30 2   Download

The main findings of the study were that: (1) Goats fed Bauhinia acuminata responded with improved diet digestibility, N retention and growth rate when the Bauhinia acuminata was supplemented with water spinach; (2) However an important negative effect was that the improvement in diet digestibility by supplementation with water spinach led to increases in methane production per unit diet DM digested; (3) Supplementing Bauhinia acuminata foliage with leaves from a bitter variety of cassava reduced the in vitro production of methane when compared with supplementation by leaves from a sweet va...

145p nguathienthan12 23-05-2021 25 2   Download

The study aimed at the utilization of locally available feed resources for increasing growth performance and reducing enteric methane emissions from goats in Lao PDR.

34p nguathienthan12 23-05-2021 30 3   Download

The main findings of the study were that (i) gas production and methane content of the gas were reduced when ensiled cassava root replaced the dried cassava root as a carbohydrate source, and when cassava leaf meal replaced water spinach meal as a protein source; (ii) Adding brewers’ grains at 5% dry matter (DM) to the diet of ensiled cassava root supplemented with either cassava foliage or water spinach as the main protein source increased DM feed intake...

193p nguathienthan12 23-05-2021 26 3   Download

Objectives of this dissertation: Develop the optimal preparation procedure of modified biochar and activated carbon derived from an agricultural byproduct, such as corncob wastes; Investigate the physical and chemical properties of modified biochar and activated carbon; apply modified biochar and activated carbon in removal of ammonium from synthesised and real water under batch and column experiments.

28p capheviahe27 23-02-2021 24 3   Download

The objective of the thesis is to successfully build up a process for preparation of bioactive water-soluble low molecular weight β-glucan product from from spent brewer’ yeast by irradiation method.

31p capheviahe26 25-01-2021 45 5   Download

The main limiting factor for increasing yields in the conditions of the arid steppe of Northern Kazakhstan is moisture. The accumulation of moisture during winter precipitation for plants in arid conditions in the initial stage of the growing season was a serious production problem.

14p lucastanguyen 01-06-2020 18 3   Download

The objective of this work is to experimentally investigate the effect of the oxygen potential on the fuel and FP chemical behaviour in conditions representative of a severe accident. More specifically, the speciation of Cs, Mo and Ba is investigated.

10p christabelhuynh 29-05-2020 12 3   Download

MYRRHA is a multi-purpose research reactor able to operate in sub-critical and critical modes and currently in the design phase at SCK•CEN. The choice of LBE was driven by its chemical stability, low melting temperature, high boiling point, low chemical reactivity with water and air and a good neutronic performance.

9p christabelhuynh 29-05-2020 19 1   Download

In the current paper, we investigate the application of the Equivalent Generalized Perturbation Theory (EGPT) to derive trends and associated covariances on the neutron capture cross section of one major fission product for both light water reactors and sodium-cooled fast reactors which is Rhodium-103.

9p christabelhuynh 29-05-2020 16 0   Download

We report ammonium metavanadate catalyzed one-pot synthesis of 3,4-dihydropyrano[3,2- c]chromenes, from aldehydes, active methylene compounds malononitrile and 4-hydroxycoumarin in water:ethanol(1:1) under reflux. The attractive features of this process are mild reaction conditions, short reaction times, easy isolation of products, and excellent yields.

8p tocectocec 25-05-2020 10 1   Download

Use of poor quality water for agriculture production requires appropriate management strategies such as leaching of excessive salts, selection of salt tolerant crops, frequent application of water etc. Thus a field experiment was conducted at CCS Haryana Agricultural University, Hisar to study the salt dynamics in soil under drip irrigation system on cabbage crop and to investigate the effect of frequency and salinity levels of irrigation water on cabbage.

10p nguaconbaynhay5 16-05-2020 20 2   Download

Recovering useful hydrocarbons from sewage sludge using zirconia-supporting iron oxide catalysts was investigated. Zirconia has activity for decomposing water molecules to generate active oxygen and hydrogen species.

6p tuananhhumg 04-11-2013 38 3   Download

The rapid economic growth in Vietnam has resulted in an increasing demand for electricity. This in turn translates to a higher rate of coal resource extraction and consequent rise in pollution of water and land resources. This study estimated the environmental costs associated with the electricity demand requirements of the coal electricity sector, as a component of the long-run marginal opportunity cost (LR-MOC) of electricity production.

0p hailedangbs 02-05-2013 102 25   Download

To investigate how solubility and steric issues affect the laccase-catalysedoxidationof phenols, a series of oligomeric polyphenol compounds, having increasing size and decreasing solubility in water, was incubated with laccase. The extent of substrate conversion, and the nature of the products formed in buffered aqueous solutions, were com-pared to those obtained in the presence of an organic cosolvent, and also in the presence of twomediating species, i.e. N-hydroxyphthalimide (HPI) and 2,2,6,6-tetramethyl-piperidin-1-yloxy (TEMPO). ...

6p tumor12 22-04-2013 43 2   Download