The declining health of marine ecosystems around the world is evidence that current piecemeal governance is inadequate to successfully support healthy coastal and ocean ecosystems and sustain human ...uses of the ocean. One proposed solution to this problem is ecosystem-based marine spatial planning (MSP), which is a process that informs the spatial distribution of activities in the ocean so that existing and emerging uses can be maintained, use conflicts reduced, and ecosystem health and services protected and sustained for future generations. Because a key goal of ecosystem-based MSP is to maintain the delivery of ecosystem services that humans want and need, it must be based on ecological principles that articulate the scientifically recognized attributes of healthy, functioning ecosystems. These principles should be incorporated into a decision-making framework with clearly defined targets for these ecological attributes. This paper identifies ecological principles for MSP based on a synthesis of previously suggested and/or operationalized principles, along with recommendations generated by a group of twenty ecologists and marine scientists with diverse backgrounds and perspectives on MSP. The proposed four main ecological principles to guide MSP—maintaining or restoring: native species diversity, habitat diversity and heterogeneity, key species, and connectivity—and two additional guidelines, the need to account for context and uncertainty, must be explicitly taken into account in the planning process. When applied in concert with social, economic, and governance principles, these ecological principles can inform the designation and siting of ocean uses and the management of activities in the ocean to maintain or restore healthy ecosystems, allow delivery of marine ecosystem services, and ensure sustainable economic and social benefits.
Heavy metal stabilization is an effective method to treat chromium in tannery sludge. Here we show that mainly investigated NaH2PO4 (MSP) and organic matter (OM) to stabilize chromium in tannery ...sludge. The experimental investigation revealed that the addition of montmorillonite (MMT) and MSP samples showed a significant increase in the percentage of reducible and oxidizable Cr in the former compared to the samples with the addition of MMT. This is attributed to the formation of Cr–O bond, which allows the MSP to undergo an inner-sphere complexation reaction with the metal oxide of Cr via ligand exchange. Significantly, the MSP moiety adsorbs on the surface of OM through monodentate, which increases the adsorption sites of OM for Cr6+ and promotes the reduction of Cr6+ to Cr3+. Moreover, PO43− reacts with Cr3+ to produce CrPO4 precipitation, thus reducing the free Cr3+ content. Finally, DFT calculations confirmed that a ternary system is formed between PO43−, OM, and Cr, and the binding energy is negative, which indicated that PO43− could co-stabilize Cr with OM.
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•Stabilization of Cr by MSP is achieved through ligand exchange.•MSP amplifies the adsorption sites of OM and promotes the reduction of Cr6+.•PO43− from the dissociation of MSP reacts with Cr3+ to form CrPO4 precipitate.•Results from DFT indicate the presence of PO43−, OM, and Cr in a ternary system.
•Gamma-ray and neutron attenuation parameters for glass samples of the chemical composition SiO2Na2OCaO- ZrO2 have been investigated.•Weight fractions of each element present in the glass samples ...were calculated.•Mass attenuation coefficient (μ/ρ) values were evaluated by FLUKA simulation and XCOM code.•HVL, MFP, Zeff, Neff, EABF, EBF, and fast neutron effective removal cross sections (∑R) were calculated.
This work aimed to investigate the ionizing radiation shielding features of zirconia silicate SiO2Na2OCaO —xZrO2 (SCNZ) glass system. The mass attenuation coefficients (μ/ρ) were generated by FLUKA Monte Carlo simulation code and the obtained data was verified via the calculated data from XCOM software over an extended photon energy range of 0.015 – 20 MeV. The obtained values of μ/ρ were used to evaluate several important shielding parameters such as half value layer (HVL), mean free path (MFP), effective atomic number (Zeff), and effective electron density (Neff). Results reveal that μ/ρ, MFP, HVL, Zeff, and Neff of the investigated glasses strongly depend on photon energy and chemical composition. Additionally, by using GP fitting parameters, the exposure buildup factor (EBF) of the investigated glasses were calculated. Results show that the greatest values of buildup factors exhibit at higher energies for all glass samples. Finally, the values of fast neutron removal cross section (ΣR) and the kinetic energy loss rate (Mass Stopping Power, MSP) of alphas and protons passing through the studied glasses were evaluated. Results display that the insertion of ZrO2 improves the nuclear shielding capability of SCNZ glasses. Especially, SCNZ7 glass owns superior shielding ability for charged particles as well as gamma radiation.
Mn (II) is a metal ion commonly used in steel alloys, pigment industries, welding, fertilizers, pesticides, ceramics, and electronics. According to the Regulation of the Minister of Health No. 32 of ...2017, the permissible content of Manganese in dug well water is 0.5 mg/L. The purpose of this study was to determine the concentration of Mn (II) ions in water before and after passing through a Moringa Seeds Powder (MSP)-TiO2 membrane 20:1; 20:3; 20:5; 20:7; 20:9 and measure the percentage decrease in the concentration of Mn (II) ions in water after through the MSP-TiO2 membrane. The object of this research is a 55 ppm Mn (II) ion artificial sample at a flow rate of 0.56 mL/minute for 90 minutes with 90-watt radiation UV. The concentration of Mn (II) ion was measured by visible spectrophotometric method, the morphology of MSP, TiO2, and MSP-TiO2 membranes was characterized by SEM-EDX, and its diffraction spectra by X-Ray diffraction. The results obtained that the initial Mn(II) was 55.06 ± 0.031 ppm, the concentration of Mn (II) ions with the MSP-TiO2 membrane of mass MSP-TiO2 were 20:1; 20:3; 20:5; 20:7; 20:9 respectively 36.47±0.00; 44.16±1.15; 44.31±1.04; 44.94±0.94; 42.27±2.61 ppm. The percentage of decrease concentration of Mn (II) ion are 34.19±0.44%; 21.37±0.43%; 20.94±0.85%; 19.24±0.86%; and 19.66±0.86%. The highest percentage decrease in Mn (II) ion concentration was 34.15±0.44% in the variation of mass MSP-TiO2 20:1. This study concludes that the MSP-TiO2 membrane has the potential to reduce the concentration of Mn (II) ions in water.
Extension of spatial planning from land to the marine space has recently become a key procedure for tackling the growing environmental and blue growth related challenges. However, given the ...transboundary nature of the sea (facilitating the flow of all kinds of materials and calling for special considerations in terms of resource and ecosystem management) not all the philosophy, planning models and procedures can be “transplanted” from terrestrial to marine spatial planning. Governance issues are subject to the same limitation.This paper discusses key differences in the marine environment (compared to the land), which affect marine spatial planning and governance and is structured around the following key issues: (i) the public status of the sea, which involves a wide spectrum of stakeholders (amongthem the maritime regimes), (ii) the sovereign rights in the sea that are not separately defined by each state but by UNCLOS (especially beyond the territorial waters), (iii) the geopolitical constraints on proclaiming EEZs that reduce the area within which each coastal country can practice MSP, (iv) the usually non-defined administrative limits in the marine parts of a coastal country that impede decentralization of competencies and decision making, and (v) the lack of geospatial and socio-economic and cultural data, which creates uncertainty both for the planners and decision-makers.This article concludes by highlighting the need for adopting a tailor-made MSP research agenda and by stressing the need to enhance crossborder cooperation as well as to make transboundary considerations when planning in the sea.
Agriculture in India is undergoing a shift. It is due to a grim situation of increasing food production and rural economy linked with agriculture. On one side, agriculture production is led by 55% of ...cereal crops primarily based on minimum support prices (MSPs) by the Government of India. On the other side, horticulture accounts for only 16% of agriculture without many incentives. The cultivation cost is rising day by day. Unlike employee compensation, the market does not support farmers and their products. Despite rising production, sustainable agricultural growth is unlikely because of issues including groundwater depletion, climate change, and poor income. The MSP is driving the change in farmer’s lives in the changing nature of rural economy. However, the economic conditions of farmers have not changed much as the surveyed households (HHs) revealed based on MSP and its significance on economic condition of farmers. About 60% of farmers claimed that their income remained the same, 22% said that their condition got better, while about 14.43% of HHs claimed that their economic situation got worst. The study highlights that sustainable agriculture and changing nature of the rural economy will transform farmers’ conditions if they diversify the production of crops from cereals to non-cereal crops such as protein-based pulses or less water intensive crops such as millets.
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