Effect of cyclodextrin attendance on hexagonal ordering of MCM-41 silicas
Hydrothermal sol-gel synthesis of hexagonally ordered silicas using a hybrid template system is reported. Silicas were characterized by IR spectroscopy, X-ray diffraction techniques as well as electron microscopy. The hexagonal structure of MCM-41.
Подобные документы
Analysis of TEC1-12705 and TEC1-12706 semiconductor refrigeration chip types with different hot heat dissipation conditions. Heat pipe heat dissipation test device for radiators. Effect of hot end heat dissipation conditions on cold end temperature.
статья, добавлен 10.10.2024The study of structural changes during hot deformation metal during controlled rolling. The influence of preheating temperature and deformation degree on the size and shape of austenite grains. The definition of the polygonal structure of the austenite.
статья, добавлен 30.01.2017The comparison of natural modes for the first and second transverse oscillation modes obtained by numerical simulation and finite element package of analytical calculation of the core model. The analysis waveforms for different values of the defect.
статья, добавлен 29.06.2017- 79. Effect of functional fiber on viability of lactic acid bacteria and bifidobacteria during storage
The influence of gum arabic and oligofructose on the growth and viability of starter cultures of lactic acid bacteria and bifidobacteria used for the production of dairy products. Stimulation of growth of probiotic cultures in the presence of gum arabic.
статья, добавлен 25.12.2016 Structure of engineering systems. A description of the statistical procedures recommended for use in reliability analysis "related" components. The choice of an appropriate probabilistic model for predicting the reliability of components of one's sibling.
статья, добавлен 14.09.2016Исследование алгоритма усреднения параметров орбиты Международной космической станции, примененный при реализации совместного с европейским космическим агентством космического эксперимента Global Time System 2. Поведение ошибок по долготе и по широте.
статья, добавлен 28.10.2018The roller of the belt as the most important parts of the conveyor, being subjected to continuous stress both during operation and in stopping periods. Causes and weight percentage of failures due to fatigue. Sealing system with simple labyrinth.
статья, добавлен 27.12.2016Investigation of the surface layer structure at high resolution. Study of surface morphology of treated detail. The use of electric-surface alloying components operating under conditions of friction and abrasionerosion wear and their restoration.
статья, добавлен 22.03.2016Transit of natural gas along the territory of Ukraine to the countries of the Western and Central Europe. Main resons of the loss of pipeline efficiency. Necessity for studying of the operation modes of the gas transport system during underloading.
статья, добавлен 01.12.2017The article discusses one of the promising directions of development of the electric power industry, associated with the use of controlled AC power lines using FACTS devices, in particular, the advantages of static thyristor compensators are considered.
статья, добавлен 10.12.2024Huge gaps in structure and performance between different types of engines. The types and performance of modern advanced aero-engines, their practical applications in various aviation fields, and the development direction of future aircraft engines.
статья, добавлен 04.09.2024- 87. Исследование эффективности использования автоматической системы позиционирования солнечной батареи
Исследование повышения производительности фотоэлектрических станций с помощью систем слежения за положением Солнца. Использование инструмента "PHOTOVOLTAIC GEOGRAPHICAL INFORMATION SYSTEM". Анализ рекомендаций по выбору параметров следящих систем.
статья, добавлен 18.02.2025 The bread was made from type 500 wheat flour with the addition of pumpkin seed, chestnut or rosehip flour Bread staling was determined by measuring the deformation characteristics of the bread crumb. The total, plastic, elastic deformation of the bread.
статья, добавлен 14.02.2025Design, develop Micro Air vehicle system provides a platform to support a very wide variety of missions for the small unit. Further miniaturization of electronics and sensors these vehicles to become even smaller and to operate in complex environments.
творческая работа, добавлен 18.01.2014Analysis of the use of aluminum alloys in the transport sector. Increased speed, safety, energy savings and reduced transport emissions thanks to aluminum. Ensuring a smooth ride and improved heat dissipation from the braking system using aluminum discs.
статья, добавлен 19.03.2024Controlling the rudder, counting the distance traveled, turning off the engine and resetting the wings - the simplest autopilot functions. Radio control - the technology, that allows drones to follow difficult routes, perform maneuvers in the air.
статья, добавлен 27.02.2021Motion systems as core technologies, as mechanical systems, like microelectronic manufacturing equipment, are required to achieve high speed and accuracy. The influence of the dynamics of a mechanical system on the quality of the position tracking syste
статья, добавлен 26.08.2020Study of field distribution in structures such as a gold lattice, a graphene layer, and a silicon substrate. Conditions of maximum electromagnetic field distribution by these structures for the purpose of using them in photonics and electronics devices.
статья, добавлен 24.02.2024The traditional irrigation method, based on simple open canal systems, is extremely ineffective for managing critical and limited water resources. Conduct a qualitative assessment of irrigation water losses due to evaporation and system inefficiencies.
статья, добавлен 03.10.2021Image processing of assembly parts at specified automated line from FESTO company to automate monitoring and evaluating of obtained data together with supporting of educational activities for field: "automation and control of machines and processes".
статья, добавлен 26.08.2020Defining and analysis the essence of robot is an automatic device, which has a manipulator – mechanical analogue of human hand, and manipulator control system. Consideration and characteristic of the structural features model of domestic robot–helper.
статья, добавлен 29.01.2016To separate simultaneous removal of mechanical impurities and water - the main tasks of filters. Analysis of the graphical representation of the piping system for pumping fuel and necessary equipment for the storage and dispensing of fuel operations.
курсовая работа, добавлен 29.03.2018Approaches to optimization and the development of the model given the parameters and constraints of the subject area to improve the efficiency of product quality. Modules of adaptation and realization of adaptation functions and testing system components.
статья, добавлен 30.07.2016Elements of a watermarking system. Recovery of the hidden information. Demonstration of rightful ownership. Requirements of data-hiding-based authentication. Bridging the gap between analog and digital objects. Direct embedding readable watermarking.
книга, добавлен 08.03.2014Fast fatigue crack growth. The general content of nitrogen in the alloy system that limits fatigue life. Fragmenting the titanium sponge into small pieces and using various melting methods metals. Investigation of the Partially Melted Electrodes.
статья, добавлен 10.12.2018