PeleLM-FDF Large Eddy Simulator of Hydrocarbon Turbulent Combustion

A new computational methodology, termed "PeleLM-FDF" is developed and utilized for high fidelity large eddy simulation (LES) of complex turbulent combustion systems. This methodology is constructed via a hybrid scheme combining the Eulerian PeleLM base flow solver, with the Lagrangian Monte Carlo simulator of the filtered density function (FDF) for the subgrid scale reactive scalars. The resulting computational methodology is capable of simulating some of the most intricate physics of complex turbulence-combustion interactions. This is demonstrated by LES of a non-premixed CO/H2 temporally evolving jet flame. The chemistry is modelled via a skeletal kinetics model, and the results are appraised via detail a posteriori comparisons against direct numerical simulation (DNS) data of the same flame. Excellent agreements are observed for the time evolution of various statistics of the thermo-chemical quantities, including the manifolds of the multi-scalar mixing. The new methodology is capable of capturing the complex phenomena of flame-extinction and re-ignition at a 1/512 of the computational cost of the DNS. The high fidelity and the computational affordability of the new PeleLM-FDF solver warrants its consideration for LES of practical turbulent combustion systems

Development of the optimal mode of bleaching of linen materials by periodic method

The article presents the results of research on the operational properties of linen material bleached by the developed combined periodic method. The influence of the composition and concentration of components in the working solution on the quality indicators of bleaching was studied. The results of the study show that the use of the proposed combined method for bleaching linen and mixed fabrics allows you to obtain high values of the degree of whiteness and capillarity with the preservation of strength indicators and minimal destruction of cellulose fiber

Omnichannel Value Chain: Mapping Digital Technologies for Channel Integration Activities

In order to provide a seamless customer experience, researchers and practitioners have proposed creation of an omnichannel retailing environment by integrating online and offline channels. Channel integration necessitates use of digital technologies and there are myriads of technological solutions available. However, retailers are struggling with selection and implementation of suitable technologies to add value through channel integration. Despite the strong practical need, this issue has not been effectively addressed in the academic literature. This paper presents an omnichannel value chain underpinned by Porter’s value chain model. We identify ten channel integration activities for value creation by carrying out a synthesis of current research on omnichannel retailing. Enabling digital technologies are then mapped to these activities using technology implementation examples and provide a guideline for retailers to select appropriate technologies for the identified value creation activities

THE LEGAL FRAMEWORK ON THE SITUATION OF STRAY ANIMALS IN KZ: PRACTICES AND POLICY RESPONSES

This research study explores the situation of stray animals in Kazakhstan, emphasizing their rights and the regulatory framework. It analyzes the law “On Responsible Treatment of Animals”, its effectiveness, and public perceptions. The study examines historical and social backgrounds, identifying normative gaps in legislation. It investigates Kazakhstan's regulatory framework regarding homeless animals, encompassing their rights, security, and punishment for violations. It also contemplates global practices applicable in Kazakhstan and characterizes the gap between current reality and government actions. By applying a qualitative analysis which involves a survey and interviews, the study emphasizes public focus on safety issues over animal welfare problems. It discusses the regulatory environment, which leans toward reductionist approaches, and the financial difficulties hindering novel strategies. The study focuses on the need for a multifaceted and holistic approach, facilitating empathy and sense of responsibility towards stray animals. It invites legal reforms, public education, and evidence-based policymaking interventions to deal with the root reasons of stray animal growt

Studying the species distribution of rhubarbs (

Critical processing of herbarium materials revealed the distribution in Kazakhstan of 10 species of the genus Rheum, including Rheum compactum L., R. wittrokii Lundstr., which are classified as rare and declining in number. R. altaicum Losinsk. was discovered – relict and endemic of Altai. To clarify the distribution in Kazakhstan and compile a summary of species of the genus Rheum, 143 herbarium sheets (1840 – 2024) from the Altai Botanical Garden (ABG), Institute of Botany (AA), and the digital herbarium of Moscow State University (MW) were reviewed and processed. 253 actual places of growth were identified for 10 species of rhubarb from the flora of Kazakhstan, belonging to 5 sections: Rhapontica A. Los., Deserticola Maxim., Orbicularia A. Los., Spiciformia A. Los., Ribesiformia A. Los. A high species diversity of rhubarb was established in the Dzungarian Alatau, Altai, Tarbagatai and Ile Kungei Alatau. Geographically, the most widespread are R. tataricum, R. nanum and R. wittrockii. The research made it possible to systematize, clarify and supplement information on the species diversity and distribution of the genus Rheum in the flora of Kazakhstan