p-Adic and Adelic Harmonic Oscillator with Time-Dependent Frequency

The classical and quantum formalism for a p-adic and adelic harmonic oscillator with time-dependent frequency is developed, and general formulae for main theoretical quantities are obtained. In particular, the p-adic propagator is calculated, and the existence of a simple vacuum state as well as adelic quantum dynamics is shown. Space discreteness and p-adic quantum-mechanical phase are noted.Comment: 10 page

On p-Adic Sector of Adelic String

We consider construction of Lagrangians which are candidates for p-adic sector of an adelic open scalar string. Such Lagrangians have their origin in Lagrangian for a single p-adic string and contain the Riemann zeta function with the d'Alembertian in its argument. In particular, we present a new Lagrangian obtained by an additive approach which takes into account all p-adic Lagrangians. The very attractive feature of this new Lagrangian is that it is an analytic function of the d'Alembertian. Investigation of the field theory with Riemann zeta function is interesting in itself as well.Comment: 10 pages. Presented at the 2nd Conf. on SFT and Related Topics, Moscow, April 2009. Submitted to Theor. Math. Phy

The Nile Water-Food-Energy Nexus under Uncertainty: Impacts of the Grand Ethiopian Renaissance Dam

This is the author accepted manuscript. The final version is available from ASCE via the DOI in this recordData Availability Statement: All data, models, code that support the findings of this study are available from the corresponding author upon request.Achieving a water, food, and energy (WFE) nexus balance through policy interventions is challenging in a transboundary river basin because of the dynamic nature and intersectoral complexity that may cross borders. The Nile basin is shared by a number of riparian countries and is currently experiencing rapid population and economic growth. This has sparked new developments to meet the growing water, food, and energy demands, alleviate poverty, and improve the livelihood in the basin. Such developments could result in basinwide cooperation or trigger conflicts among the riparian countries. A system dynamics model was developed for the entire Nile basin and integrated with the food and energy sectors in Egypt to investigate the future of the WFE nexus with and without the Grand Ethiopian Renaissance Dam (GERD) during filling and subsequent operation using basinwide stochastically generated flows. Different filling rates from 10% to 100% of the average monthly flow are considered during the filling process. Results suggest that the GERD filling and operation would affect the WFE nexus in Egypt, with the impact likely to be significant if the filling process occurred during a dry period. Food production from irrigated agriculture would be reduced by 9%–19% during filling and by about 4% during GERD operation compared with the case without it. The irrigation water supply and hydropower generation in Sudan will be reduced during the filling phase of the GERD, but this is expected to be improved during the dam operation phase as a result of the regulation afforded by the GERD. Ethiopian hydropower generation is expected to be boosted by the GERD during the filling and operation of the dam, adding an average of 15,000  GWh/year once GERD comes online. Lastly, the results reveal the urgency of cooperation and coordination among the riparian countries to minimize the regional risks and maximize the regional rewards associated with the GERD.Ministry of Higher Education (MoHE), EgyptUniversity of Exete

Synthesis and characterization of hardened Cu-Fe-Ni-P alloy

In the manufacturing industry of electrical contacts, the prohibition of the use of toxic metals (Cd, Be), and desire to avoid the alloying with precious metals (Ag) has created a need for new alloys with good electrical conductivity and high mechanical properties at elevated temperatures. As a potentially useful material for this purpose, we have analyzed the continuously cast Cu-Fe-Ni-P alloy in various heat treatment conditions. Sequence of phase transformations during heat treatment was followed by 4 point D.C. electrical resistivity measuring method, and analyzed by scanning (SEM) and transmission (TEM) electron microscopy. Measurements of Vickers hardness and electrical conductivity after various heat treatment procedures indicate on high potential of Cu-Fe-Ni-P alloys as a material for electrical contacts

Peculiarities of construction of local self-government models in the modern slavic states

The peculiarities of construction of local self-government models in the modern Slavic States, which in the 90-s of XX century abandoned the socialist path of development, – have been examined. The aim of the study is to identify specific features and common approaches to the construction of local self-government system, based on the analysis of the practice of local self-government institutions of the Slavic States and the provisions of the Constitutions of the Republic of Serbia, the Republic of Poland, the Czech Republic, the Slovak Republic, Ukraine, the Republic of Croatia, the Russian Federation, etc.The organizational forms of local self-government and the particularities of the implementation of local issues, taking into account national traditions, – have been analyzed. In this connection, the majority of modern Slavic States recognizes and guarantees local self-government as the most important constitutional value and institution of the people’s right. It has been determined, that the list of issues of local importance mainly affects the areas of urban planning, municipal activities, culture, sports, social protection of the population and children, preschool education, healthcare, approval of municipal programs of economic development, local budgets, taxes and fees, the appointment of local referendums, etc. However, there there is a number of countries, in which local government issues are not specified in the Constitution. Among the criteria for the difference between the models of local self-government are the following: the list of issues of local importance and competence of local self-government bodies; relations with public authorities and the degree of freedom of local self-government from the state; territorial organization of local self-government, etc.It has been concluded, that the most common form of interaction between public authorities and local self-government for the Slavic states at the beginning of the XXI century, was the Zemstvo-state model, that takes into account the mutual interests of a sovereign power and the population, living within certain territorial communities

Multi-Temporal Built-Up Grids of Brazilian Cities: How Trends and Dynamic Modelling Could Help on Resilience Challenges?

This is the final version. Available on open access from MDPI via the DOI in this recordData Availability Statement: The data presented in this study are available on request from the corresponding author.The northeastern Brazilian region has been vulnerable to hydrometeorological extremes, especially droughts, for centuries. A combination of natural climate variability (most of the area is semi-arid) and water governance problems increases extreme events’ impacts, especially in urban areas. Spatial analysis and visualisation of possible land-use change (LUC) zones and trends (urban growth vectors) can be useful for planning actions or decision-making policies for sustainable development. The Global Human Settlement Layer (GHSL) produces global spatial information, evidence-based analytics, and knowledge describing Earth’s human presence. In this work, the GHSL built-up grids for selected Brazilian cities were used to generate urban models using GIS (geographic information system) technologies and cellular automata for spatial pattern simulations of urban growth. In this work, six Brazilian cities were selected to generate urban models using GIS technologies and cellular automata for spatial pattern simulations of urban sprawl. The main goal was to provide predictive scenarios for water management (including simulations) and urban planning in a region highly susceptible to extreme hazards, such as floods and droughts. The northeastern Brazilian cities’ analysis raises more significant challenges because of the lack of land-use change field data. Findings and conclusions show the potential of dynamic modelling to predict scenarios and support water sensitive urban planning, increasing cities’ coping capacity for extreme hazards

Optimizovana sinteza značajnog farmaceutskog intermedijera metil 4-[(1-oksopropil)fenilamino]piperidin-4-karboksilata

An efficient synthesis of methyl 4-[(1-oxopropyl)phenylamino]piperidine-4-carboxylate (7) has been developed starting from 1-benzylpiperidin-4-one (1). The compound is a key intermediate in the synthesis of new generation, highly active narcotic analgesics, such as remifintanil, as well as the novel classes of fentanyl analogues. An optimized Strecker-type condensation of piperidone 1 with aniline and HCN yielded the anilino-nitrile 2(≈90%) which, upon selective hydrolysis with conc. H2SO4, gave the anilino-amide 3.After vigorous basic hydrolysis of 3, followed by acidification and successive treatment with SOCl2 and MeOH, the anilino-ester 5 was obtained (40–45%, in 3 steps). N-Acylation of 5 with propionyl chloride yielded the anilido-ester 6(70–80%) In the final step, the catalytic N-debenzylation of 6 was examined under various conditions and optimized to yield 7 in near quantitative yields.U ovom radu razvijena je efikasna sinteza metil 4-[(1-oksopropil)fenilamino]piperidin-4-karboksilata (7), prolazeći od 1-benzil piperidin-4-on-1 (1). Jedinjenje 7 je ključni intermedijer u sintezi nove generacije visoko aktivnih narkotičkih analgetika, kao što je remifentanil a takođe i novih klasa analoga fentanyla. U optimizovanoj Strecker-ovoj kondenzaciji priperidona 1 sa anilinom i HCN, dobijen je anilino-nitril 2 (≈90%) prinos čijom je selektivnom hidrolizom pomoću konc. H2SO4 postao anilino-amid 3. Intenzivnom baznom hidrolizom ovog intermedijera, zakišeljavanjem a zatim sukcesivno reakcijom sa SOCl2 i MeOH sintetisan je anilino-estar 5 (≈40–45% prinos u 3 faze). N-acelovanjem anilino-estra 5 sa propionil hloridom postao je anilido-estar 6 (≈70–80% prinos). U poslednjom fazi sinteze izvršena je optimizacija katalitičkog N-debenzilovanja anilido-estra 6 do finalnog proizvoda 7, u približno kvantitativnom prinosu

Neki funkcionalni dodaci u mleku i proizvodima od mleka namenjeni poboljšanju zdravlja

Functional foods have boldly entered the global market during the past decade and still continue to gain market share as value added products at a rapid pace. Although the term "functional foods" currently lacks a common definition, this category is generally thought to include products that influence specific functions in the body and thereby offer benefits for health, well-being or performance, beyond their regular nutritional value. Functional foods have been developed in almost all food categories and dairy industry is the leader in this field. Added-value dairy products have revitalized the European traditional dairy sector. Probiotic beverages were the youngest dairy sector, having been launched in the mid-1990s, and they "remain the core focus for the category." But recent new product development has focused on the "provision of alternative health benefits, with products aimed at cholesterol reduction and slimming" as well as "recent launches in the area of blood-pressure control. Growth rates of these products remain very dynamic and growing in popularity is also evident.Mleko i mlečni proizvodi danas su besumnje lideri u oblasti funkcionalne hrane koja je nesumnjivo postala jedan od najznačajnijih pokretača razvoja prehrambene industrije. Tome je doprinela i suplementacija sa većim brojem ingredijenata, među kojima, pored probiotika, značajno mesto pripada i Omega 3 masnim kiselinama kao i fitostanolima i fitosterolima. Njihova uloga prvenstveno se ogleda u prevenciji od kardiovaskularnih oboljenja, odnosno u redukciji LDL holesterola. Ako se ima u vidu da se populacija starijih osoba naglo povećava kao i njihova svest o pravilnoj ishrani a da istovremeno i ostale populacije sve više vode računa o uticaju hrane na zdravlje, jasno je da funkcionalni mlečni proizvodi mogu u određenom stepenu da doprinesu poboljšanju opšteg zdravstvenog stanja. U istu grupu proizvoda spadaju i oni koji sadrže bioaktivne peptide nastale razgradnjom kazeina u toku procesa fermentacije kao rezultat aktivnosti određenih sojeva bakterija mlečne kiseline. Sigurno je da nova saznanja u ovoj oblasti mogu samo da ubrzaju navedeni trend

p-Adic Mathematical Physics

A brief review of some selected topics in p-adic mathematical physics is presented.Comment: 36 page