696 research outputs found

    Vesistö- ja valuma-aluekunnostukset Natura 2000 -alueilla: suunnittelun toimintamalli

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    Vesienhoidon ja luonnonsuojelun tavoitteet ovat useimmiten yhdenmukaisia. Ne tähtäävät paitsi vesiekosysteemien hyvään tilaan, myös lajien ja luontotyyppien suotuisaan suojelutasoon. Vesien ja luontotyyppien tilan parantamisen ohella vesistökunnostustoimenpiteitä voidaan suunnitella myös virkistyskäyttöedellytysten kohentamiseksi ja maisemansuojelun edistämiseksi. Vesistöjen ekologisen tilan parantaminen edellyttää useimmiten riittävää ulkoisen kuormituksen vähentämistä. Näin ollen vesiensuojelutoimet valuma-alueella ovat keskeisiä hoitotoimia vesistökunnostuksissa ja valuma-aluetasoisen kunnostussuunnittelun tarve on nostettu esille useissa ohjelmissa ja strategioissa. Toistaiseksi Natura 2000 -alueiden huomioiminen on kuitenkin jäänyt valuma-aluetason kunnostussuunnittelun ohjeistuksessa vähälle huomiolle. Vesienhoidon ja virkistyskäytön toimenpiteet voivat toisinaan aiheuttaa luontodirektiivin lajien lisääntymis- ja levähdyspaikkojen paikallista heikentymistä ja maisemansuojelulliset hoitotoimenpiteet voivat puolestaan olla ristiriidassa vesiensuojelutavoitteiden kanssa. Myös luonto- ja lintudirektiivin tavoitteet saattavat ajoittain olla ristiriidassa toistensa kanssa. Natura 2000 -alueilla tehtävien vesistökunnostusten ja vesiensuojelutoimenpiteiden tulisi parantaa paitsi vesistön tilaa, myös alueen suojeluperusteena olevan luontotyypin tilaa, sekä edistää luontotyypille ominaisten lajien elinmahdollisuuksia. Luontodirektiivin lajien suotuisan suojelutason sekä lajien lisääntymis- ja levähdyspaikkojen säilyminen on turvattava. Freshabit LIFE IP -hankkeessa (2016–2022) toteutettiin vesistö- ja valuma-aluekunnostuksia yhteensä 33 Natura 2000 -alueella, jotka sijoittuivat 11 vesistöalueelle eri puolille Suomea. Hankkeen tavoitteena oli parantaa Suomen sisävesien luonnon monimuotoisuutta ja kohdevesistöjen ekologista tilaa kehittämällä valuma-aluetason suunnittelun toimintatapoja ja testaamalla niitä hankkeen kohdevesistöissä. Hankkeen kokemusten perusteella koottiin tämä toimintamalli, jossa kuvataan vesistö- ja valuma-aluekunnostusten suunnittelun periaatteet Natura 2000 -alueilla, jotta mahdolliset ristiriidat pystytään huomioimaan ja ratkaisemaan. Natura 2000 -alueilla valuma-aluetason kunnostussuunnittelun keskiössä ovat paitsi erityistä huomiota vaativien lajien ja luontotyyppien tunnistaminen ja huomioiminen toimenpiteiden ajoituksessa ja sijoittamisessa, myös sidosryhmien osallistaminen jo suunnittelun alkuvaiheessa. Sidosryhmistä oleellisimpia ovat maa- ja vesialueiden omistajat. Vesistökunnostusmenetelmät valitaan kohdekohtaisesti, seurantatietojen perusteella tunnistettujen ongelmien ja niiden pohjalta muodostettujen tavoitteiden mukaisesti. Kunnostusten seurantaan tulee varata riittävästi resursseja, jotta vaikuttavuutta pystytään arvioimaan. Seurantaa tulisi tehdä niin vedenlaadun ja biologisten tekijöiden kuin direktiivilajien osalta myös kunnostusten jälkeen. Ulkoisen kuormituksen vähentäminen on avainasemassa, jotta kunnostuksilla voidaan saavuttaa vaikuttavuutta pitkällä tähtäimellä. Restoration and water protection of aquatic ecosystems at Natura 2000 sites: framework for planning The goals of water resource management and nature conservation are most often consistent. Both can aim at a good status of aquatic ecosystems, and at a favorable conservation status of species and habitats. In addition to improving the condition of aquatic ecosystems, restoration measures can also be targeted to improve the prerequisites for recreational use and to promote landscape protection. Improving the ecological status of water bodies typically requires a sufficient reduction of the external loading. Consequently, water protection measures in the catchment area are key management measures on a watershed level. The need for planning restoration measures at the catchment scale has been brought up in several national programs and strategies. However, the consideration of Natura 2000 sites has so far received less attention in such guidelines. Some restoration measures targeted to improve the status of water bodies and their recreational value can sometimes cause a local deterioration of breeding and resting habitats for species that are included in the European Union’s Birds and Habitats Directives. Also, some landscape protection measures can, in turn, conflict with the goals of water protection. Additionally, the objectives of the Birds and Habitats Directives may sometimes conflict with each other. The restoration of water bodies and water protection measures carried out at sites under Natura 2000 network should not only improve the status of aquatic ecosystems and certain habitat types to which protection of the areas are based on, but they should also promote the survival of species that are typical for the given habitat types. A favorable conservation status for species and habitats must be secured. In the Freshabit LIFE IP -project (2016–2022), restoration and water protection measures were carried out at a total of 33 Natura 2000 sites located in 11 separate watersheds around the country. The aim of the project was to improve the biodiversity of Finnish inland waters and the ecological status of the target lakes and streams by developing and implementing planning procedures at a catchment scale. Based on the project’s experiences, this framework for planning was put together to describe the principles of planning restoration and water protection measures at Natura 2000 sites, so that possible conflicts can be considered and resolved. At Natura 2000 sites, the focus of planning restorations at the catchment level is not only about identification and consideration of species and habitats that require special attention in the timing and placement of different measures. It is also about the involvement of stakeholders, most importantly the owners of land and water areas, already in the initial stages of planning. The restoration methods are selected site-specifically, according to the problems identified and targets set on the basis of validated monitoring data. Sufficient resources should always be set aside for monitoring the impacts of restorations, that should be carried out before, during and after the easures allowing for evaluating their effectiveness. Monitoring should include both water quality, morphology and the species included in the Directives. Reducing the external loading is always a key to achieve effectiveness in the long term

    Metabolic Regulation in Progression to Autoimmune Diabetes

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    Recent evidence from serum metabolomics indicates that specific metabolic disturbances precede β-cell autoimmunity in humans and can be used to identify those children who subsequently progress to type 1 diabetes. The mechanisms behind these disturbances are unknown. Here we show the specificity of the pre-autoimmune metabolic changes, as indicated by their conservation in a murine model of type 1 diabetes. We performed a study in non-obese prediabetic (NOD) mice which recapitulated the design of the human study and derived the metabolic states from longitudinal lipidomics data. We show that female NOD mice who later progress to autoimmune diabetes exhibit the same lipidomic pattern as prediabetic children. These metabolic changes are accompanied by enhanced glucose-stimulated insulin secretion, normoglycemia, upregulation of insulinotropic amino acids in islets, elevated plasma leptin and adiponectin, and diminished gut microbial diversity of the Clostridium leptum group. Together, the findings indicate that autoimmune diabetes is preceded by a state of increased metabolic demands on the islets resulting in elevated insulin secretion and suggest alternative metabolic related pathways as therapeutic targets to prevent diabetes

    Penilaian Kinerja Keuangan Koperasi di Kabupaten Pelalawan

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    This paper describe development and financial performance of cooperative in District Pelalawan among 2007 - 2008. Studies on primary and secondary cooperative in 12 sub-districts. Method in this stady use performance measuring of productivity, efficiency, growth, liquidity, and solvability of cooperative. Productivity of cooperative in Pelalawan was highly but efficiency still low. Profit and income were highly, even liquidity of cooperative very high, and solvability was good

    Juxtaposing BTE and ATE – on the role of the European insurance industry in funding civil litigation

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    One of the ways in which legal services are financed, and indeed shaped, is through private insurance arrangement. Two contrasting types of legal expenses insurance contracts (LEI) seem to dominate in Europe: before the event (BTE) and after the event (ATE) legal expenses insurance. Notwithstanding institutional differences between different legal systems, BTE and ATE insurance arrangements may be instrumental if government policy is geared towards strengthening a market-oriented system of financing access to justice for individuals and business. At the same time, emphasizing the role of a private industry as a keeper of the gates to justice raises issues of accountability and transparency, not readily reconcilable with demands of competition. Moreover, multiple actors (clients, lawyers, courts, insurers) are involved, causing behavioural dynamics which are not easily predicted or influenced. Against this background, this paper looks into BTE and ATE arrangements by analysing the particularities of BTE and ATE arrangements currently available in some European jurisdictions and by painting a picture of their respective markets and legal contexts. This allows for some reflection on the performance of BTE and ATE providers as both financiers and keepers. Two issues emerge from the analysis that are worthy of some further reflection. Firstly, there is the problematic long-term sustainability of some ATE products. Secondly, the challenges faced by policymakers that would like to nudge consumers into voluntarily taking out BTE LEI

    Optimasi Portofolio Resiko Menggunakan Model Markowitz MVO Dikaitkan dengan Keterbatasan Manusia dalam Memprediksi Masa Depan dalam Perspektif Al-Qur`an

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    Risk portfolio on modern finance has become increasingly technical, requiring the use of sophisticated mathematical tools in both research and practice. Since companies cannot insure themselves completely against risk, as human incompetence in predicting the future precisely that written in Al-Quran surah Luqman verse 34, they have to manage it to yield an optimal portfolio. The objective here is to minimize the variance among all portfolios, or alternatively, to maximize expected return among all portfolios that has at least a certain expected return. Furthermore, this study focuses on optimizing risk portfolio so called Markowitz MVO (Mean-Variance Optimization). Some theoretical frameworks for analysis are arithmetic mean, geometric mean, variance, covariance, linear programming, and quadratic programming. Moreover, finding a minimum variance portfolio produces a convex quadratic programming, that is minimizing the objective function ðð¥with constraintsð ð 𥠥 ðandð´ð¥ = ð. The outcome of this research is the solution of optimal risk portofolio in some investments that could be finished smoothly using MATLAB R2007b software together with its graphic analysis

    Search for stop and higgsino production using diphoton Higgs boson decays

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    Results are presented of a search for a "natural" supersymmetry scenario with gauge mediated symmetry breaking. It is assumed that only the supersymmetric partners of the top-quark (stop) and the Higgs boson (higgsino) are accessible. Events are examined in which there are two photons forming a Higgs boson candidate, and at least two b-quark jets. In 19.7 inverse femtobarns of proton-proton collision data at sqrt(s) = 8 TeV, recorded in the CMS experiment, no evidence of a signal is found and lower limits at the 95% confidence level are set, excluding the stop mass below 360 to 410 GeV, depending on the higgsino mass

    Impacts of the Tropical Pacific/Indian Oceans on the Seasonal Cycle of the West African Monsoon

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    The current consensus is that drought has developed in the Sahel during the second half of the twentieth century as a result of remote effects of oceanic anomalies amplified by local land–atmosphere interactions. This paper focuses on the impacts of oceanic anomalies upon West African climate and specifically aims to identify those from SST anomalies in the Pacific/Indian Oceans during spring and summer seasons, when they were significant. Idealized sensitivity experiments are performed with four atmospheric general circulation models (AGCMs). The prescribed SST patterns used in the AGCMs are based on the leading mode of covariability between SST anomalies over the Pacific/Indian Oceans and summer rainfall over West Africa. The results show that such oceanic anomalies in the Pacific/Indian Ocean lead to a northward shift of an anomalous dry belt from the Gulf of Guinea to the Sahel as the season advances. In the Sahel, the magnitude of rainfall anomalies is comparable to that obtained by other authors using SST anomalies confined to the proximity of the Atlantic Ocean. The mechanism connecting the Pacific/Indian SST anomalies with West African rainfall has a strong seasonal cycle. In spring (May and June), anomalous subsidence develops over both the Maritime Continent and the equatorial Atlantic in response to the enhanced equatorial heating. Precipitation increases over continental West Africa in association with stronger zonal convergence of moisture. In addition, precipitation decreases over the Gulf of Guinea. During the monsoon peak (July and August), the SST anomalies move westward over the equatorial Pacific and the two regions where subsidence occurred earlier in the seasons merge over West Africa. The monsoon weakens and rainfall decreases over the Sahel, especially in August.Peer reviewe

    Severe early onset preeclampsia: short and long term clinical, psychosocial and biochemical aspects

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    Preeclampsia is a pregnancy specific disorder commonly defined as de novo hypertension and proteinuria after 20 weeks gestational age. It occurs in approximately 3-5% of pregnancies and it is still a major cause of both foetal and maternal morbidity and mortality worldwide1. As extensive research has not yet elucidated the aetiology of preeclampsia, there are no rational preventive or therapeutic interventions available. The only rational treatment is delivery, which benefits the mother but is not in the interest of the foetus, if remote from term. Early onset preeclampsia (<32 weeks’ gestational age) occurs in less than 1% of pregnancies. It is, however often associated with maternal morbidity as the risk of progression to severe maternal disease is inversely related with gestational age at onset2. Resulting prematurity is therefore the main cause of neonatal mortality and morbidity in patients with severe preeclampsia3. Although the discussion is ongoing, perinatal survival is suggested to be increased in patients with preterm preeclampsia by expectant, non-interventional management. This temporising treatment option to lengthen pregnancy includes the use of antihypertensive medication to control hypertension, magnesium sulphate to prevent eclampsia and corticosteroids to enhance foetal lung maturity4. With optimal maternal haemodynamic status and reassuring foetal condition this results on average in an extension of 2 weeks. Prolongation of these pregnancies is a great challenge for clinicians to balance between potential maternal risks on one the eve hand and possible foetal benefits on the other. Clinical controversies regarding prolongation of preterm preeclamptic pregnancies still exist – also taking into account that preeclampsia is the leading cause of maternal mortality in the Netherlands5 - a debate which is even more pronounced in very preterm pregnancies with questionable foetal viability6-9. Do maternal risks of prolongation of these very early pregnancies outweigh the chances of neonatal survival? Counselling of women with very early onset preeclampsia not only comprises of knowledge of the outcome of those particular pregnancies, but also knowledge of outcomes of future pregnancies of these women is of major clinical importance. This thesis opens with a review of the literature on identifiable risk factors of preeclampsia

    Search for heavy resonances decaying to two Higgs bosons in final states containing four b quarks

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    A search is presented for narrow heavy resonances X decaying into pairs of Higgs bosons (H) in proton-proton collisions collected by the CMS experiment at the LHC at root s = 8 TeV. The data correspond to an integrated luminosity of 19.7 fb(-1). The search considers HH resonances with masses between 1 and 3 TeV, having final states of two b quark pairs. Each Higgs boson is produced with large momentum, and the hadronization products of the pair of b quarks can usually be reconstructed as single large jets. The background from multijet and t (t) over bar events is significantly reduced by applying requirements related to the flavor of the jet, its mass, and its substructure. The signal would be identified as a peak on top of the dijet invariant mass spectrum of the remaining background events. No evidence is observed for such a signal. Upper limits obtained at 95 confidence level for the product of the production cross section and branching fraction sigma(gg -> X) B(X -> HH -> b (b) over barb (b) over bar) range from 10 to 1.5 fb for the mass of X from 1.15 to 2.0 TeV, significantly extending previous searches. For a warped extra dimension theory with amass scale Lambda(R) = 1 TeV, the data exclude radion scalar masses between 1.15 and 1.55 TeV

    Search for supersymmetry in events with one lepton and multiple jets in proton-proton collisions at root s=13 TeV

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