Обоснование актуальности использования в трансмиссии геохода эксцентриково-циклоидального зацепления

Рассматривается состояние вопроса по темпам формирования подземного пространства в России. Проводится анализ недостатков имеющегося проходческого оборудования (щиты, комбайны). Отмечается, что перспективным способом проведения горных выработок является геовинчестерная технология, базовым функциональным элементом которой является геоход. Утверждается, что одной из ключевых систем геохода, определяющей его работоспособность, является трансмиссия. Отмечается, что реализованная в настоящее время в опытном образце геохода трансмиссия с гидроцилиндрами, имеет, как свои достоинства, так и недостатки. Это не позволяет считать трансмиссию с гидроцилиндрами оптимальным решением для её использования, при разработке геоходов нового поколения. Проводится обзор различных видов зубчатых зацеплений и делаются выводы о перспективности их применения в трансмиссии геохода

Proceedings of the International Symposium on Sorghum Grain Quality

There has long been a need to review the present knowledge on the quality of sorghum grain, especially since it is one of the major food grains of 700 million people living under impoverished conditions in the semi-arid tropics. To meet this need, ICRISAT hosted an International Symposium on Sorghum Grain Quality in October 1981 at ICRISAT Center near Hyderabad, India. It was sponsored by the USAID Title XII Collaborative Research Support Program on Sorghum and Pearl Millet ( INTSORMIL) , the Indian Council of Agricultural Research ( ICAR) ,and the International Crops Research Institute for the Semi-Arid Tropics (ICRISAT). Participants interested in sorghum as a food who attended the Symposium represented diverse disciplines: food technology, home economics, nutrition, breeding, biochemistry, food processing, engineering, pathology, and economics, and the topics included the existing knowledge on preparing sorghum as a food, its grain structure and deterioration, milling and laboratory methods for evaluating and improving food quality, nutrition, consumer acceptance, marketing, and quality standards. A wide range of sorghum grain types is used to prepare different solid and liquid foods such as porridges, leavened and unleavened breads, snacks, beverages, and beer. However, there are two major disadvantages of sorghum as a food—the problems of nutrient uptake, and the constant drudgery involved in hand pounding and hand grinding to make sorghum flour. Sorghum grain quality is a complex subject. Only in recent years have nutritionists and millers studied the problems associated wi t h sorghum. To replace hand processing, several pilot projects using machines for pearling and grinding are under way in some locations in Africa. Increasingly, plant breeders are developing new varieties and hybrids. For successful adoption of new cultivars by farmers, consumer acceptance is an essential requirement. We need more information on why sorghum is accepted or rejected as a food, and work still needs to be done to develop laboratory tests to screen sorghum for food quality

Implementation of graphene multilayer electrodes in quantum dot light-emitting devices

Graphene is a highly attractive candidate for implementation as electrodes in next-generation large-area optoelectronic devices thanks to its high electrical conductivity and high optical transparency. In this study, we show all-solution-processed quantum dot-based light-emitting devices (QD-LEDs) using graphene mono- and multilayers as transparent electrodes. Here, the effect of the number of graphene layers (up to three) on the QD-LEDs performance was studied. While the implementation of a second graphene layer was found to reduce the turn-on voltage from 2.6 to 1.8 V, a third graphene layer was observed to increase the turn-on voltage again, which is attributed to an increased roughness of the graphene layer stack. © 2015, Springer-Verlag Berlin Heidelberg

ScerTF: a comprehensive database of benchmarked position weight matrices for Saccharomyces species

Saccharomyces cerevisiae is a primary model for studies of transcriptional control, and the specificities of most yeast transcription factors (TFs) have been determined by multiple methods. However, it is unclear which position weight matrices (PWMs) are most useful; for the roughly 200 TFs in yeast, there are over 1200 PWMs in the literature. To address this issue, we created ScerTF, a comprehensive database of 1226 motifs from 11 different sources. We identified a single matrix for each TF that best predicts in vivo data by benchmarking matrices against chromatin immunoprecipitation and TF deletion experiments. We also used in vivo data to optimize thresholds for identifying regulatory sites with each matrix. To correct for biases from different methods, we developed a strategy to combine matrices. These aligned matrices outperform the best available matrix for several TFs. We used the matrices to predict co-occurring regulatory elements in the genome and identified many known TF combinations. In addition, we predict new combinations and provide evidence of combinatorial regulation from gene expression data. The database is available through a web interface at http://ural.wustl.edu/ScerTF. The site allows users to search the database with a regulatory site or matrix to identify the TFs most likely to bind the input sequence