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1.
Jyri Seppla Matti Melanen Ilmo Menp Sirkka Koskela Jyrki Tenhunen Marja‐Riitta Hiltunen 《Journal of Industrial Ecology》2005,9(4):117-130
The concept of eco-efficiency is commonly referred to as a business link to sustainable development. In this article, ecoefficiency is examined at a regional level as an approach to promoting the competitiveness of economic activities in the Finnish Kymenlaakso region and mitigating their harmful impacts on the environment. The aim is to develop appropriate indicators for monitoring changes in the eco-efficiency of the region. A starting point is to produce indicators for the environmental and economic dimensions of regional development and use them for measuring regional eco-efficiency. The environmental impact indicators are based on a life-cycle assessment method, producing different types of environmental impact indicators: pressure indicators (e.g., emissions of CO2 ), impact category indicators (e.g., CO2 equivalents in the case of climate change), and a total impact indicator (aggregating different impact category indicator results into a single value). Environmental impact indicators based on direct material input, total material input, and total material requirement of the Kymenlaakso region are also assessed. The economic indicators used are the gross domestic product, the value added, and the output of the main economic sectors of Kymenlaakso. In the eco-efficiency assessment, the economic and environmental impact indicators are monitored in the same graph. In a few cases eco-efficiency ratios can also be calculated (the economic indicators are divided by the environmental indicators). Output (= value added + intermediate consumption) is used as an economic indicator related to the environmental impact indicators, which also cover the upstream processes of the region's activities. In the article, we also discuss the strengths and weaknesses of using the different environmental impact indicators. 相似文献
2.
Summary Stable light production inEscherichia coli is achieved by cloning the genes encoding bacterial luciferase fromVibrio harveyi. To gain advantage of sensitive detection of light we transferred the genes under the control of a regulatable promoter system and searched for growth and buffer conditions where bacteria emitted stable light. Based on our findings an automated biosensor system can be developed to monitor the effects of biologically active compounds against stable-light producing bacteria. 相似文献
3.
R. Cerf M. Ould Hénoune M. L. Ben Matti E. H. El Ousdad A. Daoudi 《Journal of biological physics》1993,19(3):223-233
A departure from single-system dynamics, that may arise in characterizing self-organized dynamics of complex systems, is dealt with by using the Karhunen-Loève expansion of the trajectory matrix to decompose an experimental signal in a sum of spectral features. For an electroencephalographic -signal, a separation of waves and extraction of additive sub-signals are achieved, each sub-signal covering a well-bounded and physiologically meaningful frequency range. From the subsignals, an attractor that vanishes on phase-randomizing the data is characterized, under conditions where none was found for the recorded signal. 相似文献
4.
The nuclear 18S, 5.8S and 25S rRNA genes exist as thousands of rDNA repeats in the Scots pine genome. The number and location
of rDNA loci (nucleolus organizers, NORs) were studied by cytological methods, and a restriction map from the coding region
of the Scots pine rDNA repeat was constructed using digoxigenin-labeled flax rDNA as a probe. Based on the maximum number
of nucleoli and chromosomal secondary constrictions, Scots pine has at least eight NORs in its haploid genome. The size of
the Scots pine rDNA repeat unit is approximately 27 kb, two- or threefold larger than the typical angiosperm rDNA unit, but
similar in size to other characterized conifer rDNA repeats. The intergenic spacer region (IGS) of the rDNA repeat unit in
Scots pine is longer than 20 kb, and the transcribed spacer regions surrounding the 5.8S gene (ITS1 and ITS2) span a region
of 2.9 kb. Restriction analysis revealed that although the coding regions of rDNA repeats are homogeneous, heterogeneity exists
in the intergenic spacer region between individuals, as well as among the rDNA repeats within individuals. 相似文献
5.
Matti Mandelin 《Prostaglandins & other lipid mediators》1978,16(1):143-152
The abortifacient effect of a single-dose, long-acting vaginal suppository containing 3.0 mg of 15-methyl PGF2α methyl ester was investigated in 104 early pregnancies. The pregnancy was terminated in 91 per cent of the cases. The abortion was uncomplicated in 79 patients, while 12 patients experienced prolonged bleeding.In 21 uncomplicated cases, Vabra® curettage done 4 weeks after therapy revealed necrotic residual tissue in 16 patients and nonspecific endometritis in 20 patients. Residual tissue was found in about 50 per cent of the patients curettaged after 1st menstruation, but no residua was found after 2nd menstruation.In patients with prolonged bleeding, substantial amounts of necrotic residual tissue was found in all patients curettaged 4 weeks after therapy. The decline of serum hCG and plasma progesterone levels was significantly slower in these patients as compared with uneventful abortions. 相似文献
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Hepatic enzymes connected with the formation and metabolism of free D-glucuronic acid were affected in rats after treatment with disulfiram or diethyldithiocarbamate (300 mg/kg, intragastrically, per day, 4 X). The activities of UDPglucose dehydrogenase, UDPglucuronic acid pyrophosphatase, UDPglucuronosyltransferase and L-gulonate dehydrogenase were enhanced, while those of glucose-6-phosphate dehydrogenase, beta-glucuronidase and D-glucuronolactone dehydrogenase were inhibited. These changes were more pronounced with disulfiram than diethyldithiocarbamate. Treatment with phenobarbital (80 mg/kg, i.p., per day, 4 X) enhanced UDP glucuronosyl-transferase, but brought about different effects on the other enzymes. Concurrent administration of phenobarbital with disulfiram or diethyldithiocarbamate led to potentiation or antagonism of the primary effects of each compound when given alone. The results suggest that activation of the D-glucuronic acid pathway may proceed in various ways, and that it is not necessarily followed by a simultaneous induction of the microsomal mixed-function oxygenase activity. 相似文献
10.
Matti T. Kahonen 《Biochimica et Biophysica Acta (BBA)/General Subjects》1976,428(3):690-701
The subcellular distribution of carnitine acetyl-, octanoyl-, and palmitoyltransferase in the livers of normal and clofibrate-treated male rats was studied with isopycnic sucrose density gradient fraction.In normal liver 48% of total carnitine acetyltransferase activity was peroxisomal, 36% of the activity located in mitochondria and 16% in a membranous fraction containing microsomes. Carnitine octanoyltransferase and carnitine palmitoyltransferase were confined almost totally (77–81%) to mitochondria in normal liver.Clofibrate treatment increased the total activity of carnitine acetyltransferase over 30 times, whereas the total activities of the other two transferases were increased only 5-fold.From the three different subcellular carnitine acetyltransferases the mitochondrial one was not responsive to clofibrate treatment, i.e. the rise in mitochondrial activity was over 70-fold as contrasted to the 6- and 14-fold rises in peroxisomal and microsomal activities, respectively. After treatment mitochondria contained 79% of total activity.It is concluded that the clofibrate-induced increase of carnitine acetyltransferase activity is not due to the peroxisomal proliferation that occurs during clofibrate treatment. The rise in peroxisomal activity contributed only 8% to the total increase.After clofibrate treatment the greatest part of carnitine octanoyl- and palmitoyltrnasferase activities were located in mitochondria but a considerable amount of both activities was found also in the soluble fraction of liver. 相似文献