Inclusive Jet and Hadron Suppression in a Multi-Stage Approach

We present a new study of jet interactions in the Quark-Gluon Plasma created in high-energy heavy-ion collisions, using a multi-stage event generator within the JETSCAPE framework. We focus on medium-induced modifications in the rate of inclusive jets and high transverse momentum (high-$p_{\mathrm{T}}$) hadrons. Scattering-induced jet energy loss is calculated in two stages: A high virtuality stage based on the MATTER model, in which scattering of highly virtual partons modifies the vacuum radiation pattern, and a second stage at lower jet virtuality based on the LBT model, in which leading partons gain and lose virtuality by scattering and radiation. Coherence effects that reduce the medium-induced emission rate in the MATTER phase are also included. The \trento\ model is used for initial conditions, and the (2+1)D VISHNU model is used for viscous hydrodynamic evolution. Jet interactions with the medium are modeled via 2-to-2 scattering with Debye screened potentials, in which the recoiling partons are tracked, hadronized, and included in the jet clustering. Holes left in the medium are also tracked and subtracted to conserve transverse momentum. Calculations of the nuclear modification factor ($R_{\mathrm{AA}}$) for inclusive jets and high-$p_{\mathrm{T}}$ hadrons are compared to experimental measurements at RHIC and the LHC. Within this framework, we find that two parameters for energy-loss, the coupling in the medium and the transition scale between the stages of jet modification, suffice to successfully describe these data at all energies, for central and semi-central collisions, without re-scaling the jet transport coefficient $\hat{q}$.Comment: 33 pages, 23 figure

Multi-scale evolution of charmed particles in a nuclear medium

Parton energy-momentum exchange with the quark gluon plasma (QGP) is a multi-scale problem. In this work, we calculate the interaction of charm quarks with the QGP within the higher twist formalism at high virtuality and high energy using the MATTER model, while the low virtuality and high energy portion is treated via a (linearized) Boltzmann Transport (LBT) formalism. Coherence effect that reduces the medium-induced emission rate in the MATTER model is also taken into account. The interplay between these two formalisms is studied in detail and used to produce a good description of the D-meson and charged hadron nuclear modification factor RAA across multiple centralities. All calculations were carried out utilizing the JETSCAPE framework

The natural radioactivity of waste materials and their use as building materials: an Italian case study

This contribution presents an analysis of the question of using waste materials as building materials, addressing the question of their radioactivity. The building industry uses large amounts of waste products from other industries. In recent years, there is a growing tendency to use new construction materials with naturally or technologically enhanced levels of radioactivity (e.g. phosphogypsum, coal fly ash, oil shale ash, some rare minerals, etc.). Increased interest in measuring radionuclides and radon concentration in building materials is due to the health hazards and environmental pollution. Discussion of regulating international norms and of international worldwide studies is carried out, drawing conclusions on the relevance of the problem. An experimental measurement case study in Italy has been carried out and results discusse

The Microbiologic Water Pollution on Marine Ecosystems Velipoja Beach, Albania

Waters in marine ecosystems are likely contamination. The origin of pollution may be industrial, radioactive, agricultural, urban mikobiologjike etc.. The study was conducted in the waters of the Adriatic sea ecosystem aims to analyze the microbiological contamination areas. These waters are used for holiday purposes by citizens. The samplings of marine water are taken from the stratum water surface about 10 cm, at a distance 10-20 m by sea coast. These samples are examined in laboratory for determination of two micro organisms, indicators excrements pollution Faecal Coliform (FC) (ISO 9803) and FC, probably Streptococcus Faecal (FS) with Filtrate Membrane Method's in specific areas (ISO 7899-2). In area Velipoja, Albania, the microbiologic elaborated analyses have resulted as follows: For FC and Streptococcus Faecal are given the minimal values FC-50, FS-50 and maximal values FC-90, FS-90 per 100 mL. About the evaluation of reaction (pH) is concluded that in Albania the sea waters coastal zones have a lightly alkaline ambient, where pH value is in the range 7.5-8.3, estimated according to recommended standards 6-9. No cases of red-tide algae development have been observe

The Biodiversity Of Flora In Protected Areas: Case Study In The Ecosystem Of Mount Ivan I Madh, In The Region Of Prespa, Albania

The ecosystem of the mountain Ivan i Madh, with an altitude of 1768 m, is encompassed by Qafa e Zvezdes at an elevation of 1099 m and Zaroshka’s hills with a height of 890 m to the north, by Mount Ivan I Vogel with an altitude of 1365 m to the east, by the river of Devoll and the Pojan field to the west, and by the Dumbrava hills to the south. Prespa is located in the sub zone of the eastern mountainous Mediterranean climate, characterized by cold winters with relatively long freezing periods and not very dry summers. Some key indicators of the climate are: annual average temperature 11.2 ° C, maximal temperature in the summer ranges 32°C whereas the minimal 1-2°C. Absolute minimum temperature is found in January and ranges at around -16°C. Commonly there are snow-covered areas for over 4 months in the eastern and northern regions. Precipitation in the form of rain reaches values of up to 750-800 mm per year. Snowfall values range from a few cm to over 1 m, with a duration of several days in the western slope and up to several weeks in eastern and northern slopes. A wide variety of forests, bushes and grasses lie in the phytoclimatic areas of Castanetum, Fagetum and Alpinetum. Flora, represented by the area of Castanetum, starts from the lake shore (altitude of 850m) to a height of 1.250 m, in which forest territory lies mainly in hills. The main types of trees are oaks such as: Bunga (Quercus petraea), Qarri (Q. cerris), bulgeri (Q. Trojan), shparthi (Q. frainetto), and bungebuta (Q. pubescentis); also accompanied by Frashëri, panja of the mountain, mëlleza, and a large prevalence of shkaza. There is also a rare existance of caraci plants (Celtis tournefortii) as well as venja (Juniperus excelsa). Specific of the area are the soft Chestnut, cultivated in the village of Golloberde, acacia, an introduced plant with relatively low areal, as well as Bush and the following types of oak: (Quercus Petrea, Quercus cerris, Quercus pubescens etc. In forests, there can be found plants endemic to the Balkans, such as: Centaurea prespana, Dianthus perviformis, Centaurea rudifula, and other endangered ones. Bushes that go along with oaks are: first of all hornbeam (Carpinus betulus) and less juniper, hazel, cornel, and hawthorn. Bushi (Bucsus semprevirensis) is characteristic of the ecosystem of mount Ivan. It is found in groups and covers an enormous area. Also it is located at the borders of 45% of the surface vegetation area. In the area of Fagetum, beech (Fagus sylvatica) can be found, as well as mountain maple, mellezë, etc. at a lesser rate. Special value this is given to this vegetation by the presence of wild hazelnut (Corylus colurna). Beech forests extend up to a height of 1.700 m on Ivan Mountain. The mountain is covered with rich medical plant resources such as: red flowers (Papaver rhoeas), orchids (Orchis mascula), mullaga (Malva sucvestris), red juniper (Juniperus ohycedrus), ballsani flower (Hyperikum perforatum), hawthorn (Crataegus monogyna), chamomile (Chamomolla recutita), birch (Betula pendula), mountain tea (Sideritis roeseri), wild rose (Rosa Kanina), blackberries (Rubus fruticosus), gorica (Pyrrus amygdaliformis), and nettles (Urtica dioica). This study was conducted in the period 2008-200

The Biodiversity Of Flora In Protected Areas: Case Study In The Ecosystem Of Mount Ivan I Madh, In The Region Of Prespa, Albania

The ecosystem of the mountain Ivan i Madh, with an altitude of 1768 m, is encompassed by Qafa e Zvezdes at an elevation of 1099 m and Zaroshka’s hills with a height of 890 m to the north, by Mount Ivan I Vogel with an altitude of 1365 m to the east, by the river of Devoll and the Pojan field to the west, and by the Dumbrava hills to the south. Prespa is located in the sub zone of the eastern mountainous Mediterranean climate, characterized by cold winters with relatively long freezing periods and not very dry summers. Some key indicators of the climate are: annual average temperature 11.2 ° C, maximal temperature in the summer ranges 32°C whereas the minimal 1-2°C. Absolute minimum temperature is found in January and ranges at around -16°C. Commonly there are snow-covered areas for over 4 months in the eastern and northern regions. Precipitation in the form of rain reaches values of up to 750-800 mm per year. Snowfall values range from a few cm to over 1 m, with a duration of several days in the western slope and up to several weeks in eastern and northern slopes. A wide variety of forests, bushes and grasses lie in the phytoclimatic areas of Castanetum, Fagetum and Alpinetum. Flora, represented by the area of Castanetum, starts from the lake shore (altitude of 850m) to a height of 1.250 m, in which forest territory lies mainly in hills. The main types of trees are oaks such as: Bunga (Quercus petraea), Qarri (Q. cerris), bulgeri (Q. Trojan), shparthi (Q. frainetto), and bungebuta (Q. pubescentis); also accompanied by Frashëri, panja of the mountain, mëlleza, and a large prevalence of shkaza. There is also a rare existance of caraci plants (Celtis tournefortii) as well as venja (Juniperus excelsa). Specific of the area are the soft Chestnut, cultivated in the village of Golloberde, acacia, an introduced plant with relatively low areal, as well as Bush and the following types of oak: (Quercus Petrea, Quercus cerris, Quercus pubescens etc. In forests, there can be found plants endemic to the Balkans, such as: Centaurea prespana, Dianthus perviformis, Centaurea rudifula, and other endangered ones. Bushes that go along with oaks are: first of all hornbeam (Carpinus betulus) and less juniper, hazel, cornel, and hawthorn. Bushi (Bucsus semprevirensis) is characteristic of the ecosystem of mount Ivan. It is found in groups and covers an enormous area. Also it is located at the borders of 45% of the surface vegetation area. In the area of Fagetum, beech (Fagus sylvatica) can be found, as well as mountain maple, mellezë, etc. at a lesser rate. Special value this is given to this vegetation by the presence of wild hazelnut (Corylus colurna). Beech forests extend up to a height of 1.700 m on Ivan Mountain. The mountain is covered with rich medical plant resources such as: red flowers (Papaver rhoeas), orchids (Orchis mascula), mullaga (Malva sucvestris), red juniper (Juniperus ohycedrus), ballsani flower (Hyperikum perforatum), hawthorn (Crataegus monogyna), chamomile (Chamomolla recutita), birch (Betula pendula), mountain tea (Sideritis roeseri), wild rose (Rosa Kanina), blackberries (Rubus fruticosus), gorica (Pyrrus amygdaliformis), and nettles (Urtica dioica). This study was conducted in the period 2008-200

Analysis of climatic changes based on indicators of temperature extremes in the Balkan and in the Mediterranean region

Realization of this study is based on research and processing of climatic temperature indicators reflected in materials science in 2008. After receiving the data, processing is done on the basis of deductive logic, based on environmental arguments which are changing due to climate change impacts. Space climate change affects countries and regions around the globe. This overview on the ends of the temperature indicator for Balkan and Mediterranean countries, gives us an opportunity to pass on to deeper studies, because the impact of climate change on physical and biological environment has no borders. The risk of global climate change is becoming increasingly apparent, there is a true need to focus on efforts to limit greenhouse gases and to minimize this issue the impacts on climate change. Lower extremity temperatures ranging up to - 32 0C station Rozaje, Montenegro and high ends of the temperature station Kebili +50 oC