Modeling algorithm of transport and technological system operation

Статья посвящена разработке моделирующего алгоритма работы транспортно-технологической системы. Математическое моделирование дает возможность формально описать любую сложную систему (в нашем случае специализированный терминал по перегрузке генеральных грузов) и с помощью описания исследовать различные режимы ее функционирования. Разработанная модель позволит осуществлять выбор оптимального в заданных условиях варианта функционирования перегрузочного комплекса, но, как любая математическая модель, она не учитывает неформализуемую часть релевантной информации. На специализированном терминале происходят сложные и многообразные процессы, связанные с перегрузкой различных грузов, контейнеров и других генеральных грузов, что не позволяет построить абсолютно адекватную математическую модель. Поэтому в математической модели представлены только основные, характерные для моделирующей системы, закономерности. При этом второстепенные факторы не принимаются во внимание, так как они являются несущественными. [1,3] The article is devoted to the development of a modeling algorithm for the operation of a transport and technological system. Mathematical modeling makes it possible to formally describe any complex system (in our case, a specialized terminal for transshipment of General cargo) and use the description to explore various modes of its operation. The developed model will allow you to choose the optimal option for the operation of the reloading complex under given conditions, but, like any mathematical model, it does not take into account the non-formalized part of the relevant information. At a specialized terminal, complex and diverse processes occur related to the transshipment of various cargo, containers and other General cargo, which does not allow us to build an absolutely adequate mathematical model. Therefore, the mathematical model presents only the main patterns that are characteristic of the modeling system. In this case, secondary factors are not taken into account, as they are insignificant. [1,3]

Functions of Cytochrome c Oxidase Assembly Factors

Cytochrome c oxidase is the terminal complex of eukaryotic oxidative phosphorylation in mitochondria. This process couples the reduction of electron carriers during metabolism to the reduction of molecular oxygen to water and translocation of protons from the internal mitochondrial matrix to the inter-membrane space. The electrochemical gradient formed is used to generate chemical energy in the form of adenosine triphosphate to power vital cellular processes. Cytochrome c oxidase and most oxidative phosphorylation complexes are the product of the nuclear and mitochondrial genomes. This poses a series of topological and temporal steps that must be completed to ensure efficient assembly of the functional enzyme. Many assembly factors have evolved to perform these steps for insertion of protein into the inner mitochondrial membrane, maturation of the polypeptide, incorporation of co-factors and prosthetic groups and to regulate this process. Much of the information about each of these assembly factors has been gleaned from use of the single cell eukaryote Saccharomyces cerevisiae and also mutations responsible for human disease. This review will focus on the assembly factors of cytochrome c oxidase to highlight some of the outstanding questions in the assembly of this vital enzyme complex.

Salinization origin of Souf Terminal Complex: Application of statistical modelling and WQI for groundwater management

The natural salinization of Souf sandy Terminal Complex groundwater notably Pontian and Mio-Pliocene has increased four times for the last 30 years, because of over pumping for drinking and irrigation. Application of the multivariate statistical modelling and the Water Quality Index (WOI) to evaluate the groundwater variables have been done, by the investigation of water samples collected from 25 boreholes, in May 2018. Cluster analysis identified three main water types based on the major ionic contents. Factor Analysis and Principal Component Analysis methods confirmed the cluster analysis results. The water groups have sodi-potassic facies which dominate in the western part of Souf, compared to the eastern part and they have generally poor quality. An osmosis phenomenon allowed the homogenization of Pontian and Mio-Pliocene groundwater. The contact of Terminal Complex with the Eocene dolomite and Senonian evaporitic allows introducing a new preferential dissolution corridors concept in which an underground leaching front occurs with the increased pumping. Overlying sandy rocks subsidence can be produced gradually with a rise in the static groundwater level because of the leached underground Senonian evaporitic rocks. Closure of wells intersecting the evaporitic layers and minimizing of pumping from Terminal Complex groundwater in the Southwest part of Souf is strongly recommended, and the groundwater is requiring treatment before supply.

Nematic Phase Induced from Symmetrical Supramolecular H-Bonded Systems Based on Flexible Acid Core

New symmetrical 1:2 supramolecular H-bonded liquid crystals (SMHBLCs) interactions, A/2Bn, were formed between adipic acid and 4-(4′–pyridylazophenyl) 4″-alkoxybenzoates. Optical and mesomorphic behaviors of the prepared SMHBLC complexes were investigated using differential scanning calorimetry (DSC), polarizing optical microscopy (POM) and X-ray diffraction (XRD). FT-IR spectroscopy was carried out to confirm the H-bond interactions of the prepared complexes via Fermi bands formation. Their photo-physical properties were investigated by UV-spectroscopy and the observed absorbance values were found to be mainly dependent on the length of the terminal alkoxy chain. Mesomorphic behaviour for all A/2Bn complexes revealed that all complexes are dimorphic-exhibiting enantiotropic mesophases with induced nematic phases, except for the long chain terminal complex which exhibits only a monomorphic smectic A phase. In order to investigate the effect of mesogenic core geometry on the mesophase properties, a comparison was established between the mesomeric behaviors of the present complexes and previously reported rigid core acid complexes. Finally, the XRD pattern confirmed the POM and DSC results.

Three new species of the genus Stephos Scott, 1892 (Crustacea, Copepoda, Calanoida, Stephidae) from Jeju Island, Korea

During general field surveys carried out recently to collect benthopelagic copepods from near the substrate of the shallow waters off Jeju Island, Korea, a few specimens of three new species of Stephos Scott, 1892, were collected. The new species are placed in the genus Stephos because of the following combination of features: absence of seta on the basal exite of maxillule, and male right leg 5 ending in an unarmed claw-like and/or mitten-like segment. Stephos jejuensissp. nov. can be distinguished from its congeners by body length 0.92 mm, left side of the female genital double-somite with protruding lobes, antennule that extends beyond the distal area of the genital double-somite, and the male leg 5 terminal complex. Stephos concavussp. nov. can be distinguished from its congeners by the genital double-somite with protruding lobes on both sides, and the presence of larger spinules on the distomedial margin of leg 5. Stephos fortipessp. nov. can be distinguished from its congeners by its longer body length, 1.12 mm long in the female, antennules that extend to the end of the genital double-somite, and the presence of a covered row of minute spinules on the ventral surface of the genital operculum in the female. Until now, 35 species of stephids were known worldwide.

IMPROVEMENT OF THE TERMINAL COMPLEX OF POSTAL AND COURIER SERVICES AS A TOOL OF LOGISTICS SYSTEM OPTIMIZATION

The article is devoted to the questions of finding ways to optimize the logistics system of postal and courier services by improving terminal complexes. It is determined that the terminal as an element of the logistics system and as part of the logistics chain forms the basic and technical requirements for the warehousing system. It is emphasized that changing consumer demands in the direction of reducing costs, increasing speed and expanding service requires a change in approaches to building a terminal system. It is established that terminals perform a significant number of functions, each of which requires consideration of such two important environmental factors as urbanization and increasing consumer demands. This requires a transition from the e-commerce model to the service center model. The article is proposed to move from the model of e-commerce to the model of the service center. Such advantages of the service model are determined : service of both business clients and consumers; availability of a sorting depot; mini fulfilment; minor automation that does not require increased implementation and maintenance costs. It is established that the planning of the terminal area is influenced by the following factors: size and geometry of the site, height difference in different parts of the territory, size and number of accepted vehicles, cargo volume for sorting and further storage, regulatory requirements of various government agencies. The advantages and disadvantages of such models of terminal organization are analyzed: the terminal with ring sorting and two-way loading; the terminal with linear sorting and one-way loading; the terminal with linear sorting and two-way loading; hexagonal terminal with ring sorting; L-shaped terminal with linear sorting and two-way loading; n-shaped terminal with linear sorting and three-way loading. Based on the proposed models, a terminal model is proposed, which will include the best structural elements of all the above models. The proposed model corresponds to the most flexible cargo handling system with double-sided loading, relatively lower sorting costs and increased capacity if necessary and a significant area for storage and assembly of shipments. The basic idea is to combine the processes of fulfilling and postal sorting in the project of one building, which reduces the processes in the supply chain and reduces the cost of construction of storage and terminal complex.

Polonia Apartment (Green Architecture)

Medan City, Indonesia's third largest city with a strategic position as the main gateway of Indonesia in the western region, must prepare itself to develop in facing variousopportunities and challenges as a metropolitan city. Polonia's ex-terminal complex post-relocation Polonia Airport is a region with the high potential to become a strategic trading center in Medan. Taking into consideration the availability of the existing area, the concept of vertical-shelter construction is chosen that can be used as a trading place, office or second residence is known as an apartment. The apartment can be defined as a building consisting of several residential units arranged in stages, and has the same space and facilities, to overcome the problem of density of occupancy rate and limited land in urban areas. Therefore, the concept of "Green Architecture" is considered appropriate to address the environmental issues. Where the concept of green architecture (Green Architecture) is an approach to the building that can minimize the various harmful effects on human health and the environment.