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41.
del Mar Delgado-Serrano Maria Oteros-Rozas Elisa Ruiz-Mallén Isabel Calvo-Boyero Diana Ortiz-Guerrero Cesar Enrique Escalante-Semerena Roberto Ivan Corbera Esteve 《Regional Environmental Change》2018,18(2):593-593
Regional Environmental Change - The published online version contains mistake. Author name was incorrectly captured. Instead of Maria del Mar Delgado-Serrano was incorrectly captured as Ma del Mar... 相似文献
42.
Jelena Cvejic Sylvie Tambutté Severine Lotto Momir Mikov Ivan Slacanin Denis Allemand 《Marine Biology》2007,152(4):855-862
Corallium rubrum is the most famous and precious coral due to the intense characteristic red colour of its skeleton. We have determined the
presence of carotenoids in natural samples of C. rubrum from Marseille, Riou, and investigated their chemical composition. Analysis was performed both on soft tissues and hard tissues
including spicules and skeleton. Since hard tissues are made of a mineral fraction and an organic fraction obtained after
demineralization, extraction was performed both with and without demineralization by EDTA. The extracts were analyzed by complementary
methods of TLC, HPLC/DAD and HPLC/MS. The components were separated by RP-18 chromatography column using acetonitrile/methanol
for HPLC/DAD and acetonitrile/water gradient for HPLC/MS analysis. Our results give the first evidence of the presence of
canthaxanthin, 4,4′-diketo-β-carotene, as the major carotenoid in all samples. Spicules exhibited higher content in carotenoids
than skeleton. Demineralization treatment improved the efficiency of carotenoid extraction by an average factor of 5 and showed
that organic matrix contains canthaxanthin. 相似文献
43.
Nearly 91% of organic pollutants in Hong Kong leachate could be effectively removed by the UASB(upflow anaerobic sludge blanket)process followed by the fenton coagulation.The COD(chemical oxygen demand)of leachate was lowered from an average of 5620 mg/L to 1910 mg/L after the UASB treatment at 37℃,and was further lowered to 513 mg/L after fenton coagulation.The remaining refractory residues could be further removed by plotochemical oxidation with the addition of H2O2.The BOD/COD ratio was greatly increased from 0.062 to 0.142,indicating the biodegradability of organic residues was improved.The photochemical oxidation for the fenton-coagulation supernatant was most effective at pH3-4,with the addition of 800 mg/L of H2O2,and UV radiation time of 30 minutes.The final effluent contained only 148 mg/L of COD,21 mg/L of BOD(biochemical oxygen demand)and 56 mg/L of TOC (total organic carbon). 相似文献
44.
Wang S Beasley HL Sumpter SR Kennedy IR 《Journal of environmental science and health. Part. B》2003,38(3):281-291
An enzyme-linked immunosorbent assay (ELISA) for pyrithiobac-sodium (Staple) produced by DuPont was validated in Australian soils. This pyrithiobac-sodium ELISA was shown to be highly sensitive with the limit of detection of 4-5 ppt. Soil samples were extracted either in PBS buffer by shaking or by accelerated solvent extraction (ASE). While pyrithiobac sodium can be analyzed directly by ELISA after ASE extraction with 1/10 or more dilutions, the analysis of PBS extract required filtration and dilution 1/20 or more depending on the concentration. Immunoassay results compared favorably with GC-MS results for both ASE and PBS extract of incurred residue of pyrithiobac sodium in soil samples, indicating that this ELISA can be an inexpensive and reliable alternative to conventional residue analysis methods for quantification of pyrithiobac-sodium. This validation provided the basis for applying the ELISA to a field study of pyrithiobac-sodium. 相似文献
45.
Taniyasu S Kannan K Holoubek I Ansorgova A Horii Y Hanari N Yamashita N Aldous KM 《Environmental pollution (Barking, Essex : 1987)》2003,126(2):169-178
Technical polychlorinated byphenyl (PCB) preparations--Delors 103, 104, 105, and 106--produced in the former Czechoslovakia were analyzed for their chlorobiphenyl (CB), chloronaphthalene (PCN) and chlorinated dibenzofuran (PCDF) composition and content using high resolution gas chromatography-mass spectrometry techniques. The congener patterns of Delors 103, 104, 105, and 106 resembled Aroclors 1242, 1248, 1254, and 1260. Delors contained PCNs and PCDFs, as impurities, at microgram per gram concentrations. Concentrations of PCNs and PCDFs in Delors were greater than those found in the corresponding Aroclors. The potential for the emissions of PCNs and PCDFs from Delor was estimated to be 3680 and 860 kg, respectively. Non- and mono-ortho PCBs were the major contributors to 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD) equivalents in Delor mixtures. 相似文献
46.
Ivan Macuzic Eva Giagloglou Marko Djapan Petar Todorovic Branislav Jeremic 《International journal of occupational safety and ergonomics》2016,22(4):514-522
Serbia is aligning with European Union requirements and the occupational safety and health (OSH) administration is one of the most representative sectors of this alignment. Many efforts were made in this field, by introducing new laws and regulations, but it turned out to be insufficient. OSH professionals need to renovate and strengthen their knowledge in accordance with continuous, updated and improved OSH standards and regulation. Lifelong learning (LLL) programmes can contribute to forming professionals who are always up to date. This paper presents an implemented LLL programme, over the duration of two academic years, dedicated to OSH professionals, and investigates whether this programme will be helpful and accepted by professionals. The results from the study show that the given LLL programme had indeed a positive influence on the professional careers of the participants and that the LLL presents the future trend in OSH education. 相似文献
47.
Du?ica Ili? Ivan S. Risti? Ljubi?a Nikoli? Mihajlo Stankovi? Goran Nikoli? Ljiljana Stanojevi? Vesna Nikoli? 《Journal of Polymers and the Environment》2012,20(1):80-87
In this work was described poly(d,l-lactide) microwave synthesis using tin(II) 2-ethylhexanoate initiated ring-opening polymerization. Polymerization was performed
at 100 °C with monomer to initiator molar ratio ([M]/[I]) of 5,000 in 30 min. The achieved number average molar mass of obtained
polymers (determined by gel permeation chromatography) was 102,320 g/mol, with the polydispersion index, Q, 2.80. Structural characterization was performed by FT-IR spectroscopy followed characteristic bands. For applicative purposes
the obtained polymer was purified during the procedure of microsphere preparation. Biodegradable microspheres prepared from
poly(d,l-lactide) have been widely studied in recent years and have become well established controlled drug delivery systems. In this
work microspheres were loaded with allyl thiosulfinate (allicin) and its transforments products (ajoene and vinyldithiine),
as pharmacological active substances. The morphology of the microspheres was analyzed using a scanning electron microscope.
Allicin was synthesized by acid oxidation of allyl disufide and purification of obtained products by liquid–liquid extraction
with diethyl ether. Obtained allicin, purity 73%, was transformed using microwave in acetone solution, at solvent boiling
temperature, for 5 min. For the quality and quantity analysis of allicin and its transformation process was used LC/MS chromatography.
(E)- and (Z)-ajoene were detected at retention time 3.1 and 3.3 min, respectively, whence 3-vynil-4H-1,2-dithiine and 2-vynil-4H-1,3-dithiine
were detected at 4.3 and 4.8 min, respectively. Retention time of allicin was 2.93 min, according to liquid chromatography
results. HPLC method was used for assessment of pharmaceutical substances (alicine and alicine transforments) releasing from
microspheres at room temperature in solutions with different pH (pH = 3 and pH = 8) for 24 h. 相似文献
48.
Ivan Holoubek Lea Houšková Zdenek Šeda Irena Holoubková Pavel Korínek Zbynek Bohácek 《毒物与环境化学》2013,95(2):73-83
The samples of soils, earthworms and vegetation (needles, lichens, mosses) were collected for the realization of Project TOCOEN (Toxic Organic Compounds in the ENvironment). The samples were collected from three TOCOEN model areas in Czechoslovakia—one city and two rural areas. The samples were analyzed for polycyclic aromatic hydrocarbons (PAHs), chlorinated pesticides (C1‐PEST) and polychlorinated biphenyls (PCBs). 相似文献
49.
Ivan Viegas Sónia Cotrim Marques Filipa Bessa Ana Lígia Primo Filipe Martinho Ulisses Miranda Azeiteiro Miguel ?ngelo Pardal 《Marine Biology》2012,159(1):33-43
This study provides a comprehensive examination of the life cycle dynamics of the brown shrimp (Crangon crangon L.) in the Mondego estuary, Portugal, a habitat located near the southern edge of the range of this species in European waters.
The phenology of all life stages was documented (from the occurrence of ovigerous females, developing embryos, planktonic
larvae and benthic post-larvae), and migration patterns of larvae into and out of the estuary were examined. Temperature-dependent
functions of egg and larval development were combined with data on field abundance to predict the timing and magnitude of
occurrence of larvae and recruits. Compared to brown shrimp at higher latitudes, southern conspecifics grow slower, mature
earlier and have smaller brood sizes, and larvae have a more protracted settlement period. The Mondego estuary, besides acting
as nursery area, is a dynamic platform for C. crangon to use in different stages, sizes and seasons. 相似文献
50.
Huijbers CM Nagelkerken I Lössbroek PA Schulten IE Siegenthaler A Holderied MW Simpson SD 《Ecology》2012,93(1):46-55
Habitat-specific cues play an important role in orientation for animals that move through a mosaic of habitats. Environmental cues can be imprinted upon during early life stages to guide later return to adult habitats, yet many species must orient toward suitable habitats without previous experience of the habitat. It is hypothesized that multiple sensory cues may enable animals to differentiate between habitats in a sequential order relevant to the spatial scales over which the different types of information are conveyed, but previous research, especially for marine organisms, has mainly focused on the use of single cues in isolation. In this study, we investigated novel habitat selection through the use of three different sensory modalities (hearing, vision, and olfaction). Our model species, the French grunt, Haemulon flavolineatum, is a mangrove/seagrass-associated reef fish species that makes several habitat transitions during early life. Using several in situ and ex situ experiments, we tested the response of fish toward auditory, olfactory, and visual cues from four different habitats (seagrass beds, mangroves, rubble, and coral reef). We identified receptivity to multiple sensory cues during the same life phase, and found that different cues induced different reactions toward the same habitat. For example, early-juvenile fish only responded to sound from coral reefs and to chemical cues from mangroves/seagrass beds, while visual cues of conspecifics overruled olfactory cues from mangrove/seagrass water. Mapping these preferences to the ecology of ontogenetic movements, our results suggest sequential cue use would indeed aid successful orientation to novel key habitats in early life. 相似文献