Walter Campbell:A distinguished life

An efficient and simple synthesis approach to form stable (68) Ga-labeled nanogels is reported and their fundamental properties investigated. Nanogels are obtained by self-assembly of amphiphilic statistical prepolymers derivatised with chelating groups for radiometals. The resulting nanogels exhibit a well-defined spherical shape with a diameter of 290 +/- 50 nm. The radionuclide (68) Ga is chelated in high radiochemical yields in an aqueous medium at room temperature. The phagocytosis assay demonstrates a highly increased internalization of nanogels by activated macrophages. Access to these (68) Ga-nanogels will allow the investigation of general behavior and clearance pathways of nanogels in vivo by nuclear molecular imaging

Проектирование информационной системы для производителей и поставщиков продукции оптом

Объектом исследования является информационная система производителей и поставщиков продукции оптом. Цель работы – проектирование и разработка веб-сайта для производителей и поставщиков продукции оптом на платформе CMS Joomla 3.7.В ходе исследования проводились разработка, модификация и тестирование модулей системы управления содержимым Joomla 3.7, а также формирование структуры веб-сайта.The object of research is the information system of manufacturers and suppliers of products in bulk. The purpose of the work is the design and development of a web site for manufacturers and suppliers of products in bulk on the CMS Joomla 3.7 platform. During the research, the development, modification and testing of Joomla 3.7 content management modules was carried out, as well as the structure of the website

Ультрафлокуляция – как метод повышения эффективности процесса извлечения тонкодисперсного угля из хвостов обогащения

На прикладі хвостів вуглезбагачення ОФ "Распадська" (р. Междуріченськ Кемеровської області, РФ) встановлено, що використання ультрафлокулярної обробки дає нижче-наступні переваги при витяганні тонкодисперсного вугілля методом седиментації в радіальному згущувачі: • зниження витрати флокулянтів – в 2,5-3,5 разу. • збільшення витягання вугільного концентрату з хвостів на 23…26%. • зменшення зольності концентрату, вилученого з хвостів з 18 до 12%. • зменшення вологості прес-фільтраційного кека концентрату, вилученого з хвостів з 40 до 35%.На примере хвостов углеобогащения ОФ "Распадская" (г. Междуреченск Кемеровской области, РФ) установлено, что использование ультрафлокулярной обработки дает нижеследующие преимущества при извлечении тонкодисперсного угля методом седиментации в радиальном сгустителе: • снижение расхода флокулянтов – в 2,5-3,5 раза. • увеличение извлечения угольного концентрата из хвостов на 23…26%. • уменьшение зольности концентрата, извлекаемого из хвостов с 18 до 12%. • уменьшение влажности пресс-фильтрационного кека концентрата, извлекаемого из хвостов с 40 до 35%

Компьютерное моделирование напряженно-деформированного состояния сварных конструкций

В данной работе показано, что при оценке и обеспечении живучести сварныхметаллоконструкций важную роль играют технологические факторы. Учет их влияния реализуется на основе применения метода конечных элементов. Описана численная методика расчета остаточных сварочных напряжений и деформаций в элементах сварных металлоконструкций.Численнообосновантехнологическийметодповышенияживучестиуказанногоклассаметаллоконструкций

Influence of deformation axis onto the length free path of screw dislocations in pure fcc materials

In this paper the influence of crystal's deformation axis orientation on formation of long, strong dislocation junctions which can be barriers that limit the shear zone has been studied. The probability of strong junctions formation has been obtained on the basis of interdislocation contact interactions model. The length of free path of screw dislocations has been defined for different orientations of crystal's deformation axis

One-step microwave synthesis of palladium-carbon nanotubes hybrids with improved catalytic performance

7 páginas, 7 figuras, 3 tablas.-- El pdf del artículo es la versión pre-print.A fast and easy one-step linker-free approach for the synthesis of palladium nanoparticle/multiwall carbon nanotube (Pd-NP/MWCNT)hybrid materials is described using microwave irradiation for the effective decomposition of Pd2dba3 complex in the presence of MWCNTs. High loadings of Pd nanoparticles (up to 40 wt.%) having sizes between 3 and 5 nm are deposited on the surface of MWCNTs within a time of only 2 minutess. The Pd-NP/MWCNT materials serve as efficient catalysts in C-C coupling as well as in hydrogenation reactions, all characterized by high conversion rates using a small amount of catalysts, high turnover frequency values and good recyclbility.Financial support from the Spanish Ministerio de Ciencia e Innovación (MICINN) and the European Regional Development Fund (ERDF) under projects CTQ2008-01784 and MAT2007-66927-C02-01, and the Gobierno de Aragón (DGAPI086- 08) is gratefully acknowledged. M.C. thanks MICINN for her Grant No. BES-2008-003503.Peer reviewe

Исследование характеристик ядерных трековых мембран для создания дренажной системы в лечении глаукомы

In this article has been researched possibility of using nuclear track membrane for fluid transport in the implementation and maintenance of the cornea weaklydehydrated state

Разработка станций и проведение на них исследований по облучению микросхем и радиобиологии пучками ионов низких и высоких энергий ускорительного комплекса NICA

The aim of this study was to evaluate the impact of androgen ablation therapy in different prostate cancer (PCa) cell lines-reflecting different stages of the disease-on (18)F-fluorodeoxyglucose (FDG), (11)C-choline and (11)C-acetate uptake. Uptake experiments were performed in androgen-sensitive (LNCaP, PC346C) and independent cell lines (22Rv1, PC346DCC, PC-3) as well as in a benign prostatic hyperplasia (BPH-1) cell line. Tracer uptake was assessed under androgen ablation. Results of the cancer cell lines were normalized to those of BPH-1. To evaluate the effect of androgen on the uptake of (18)F-FDG, (11)C-choline and (11)C-acetate in PCa cell lines, 10(-8)M R1881, 10(-10)M R1881, the combination of 10(-10)M R1881 plus 10(-6)M Casodex or 10(-6)M Casodex alone were added in parallel cell cultures 1 day before uptake experiments. Uptake in androgen-supplemented cell cultures was compared to the uptake under androgen deprivation. Uptake was corrected for cell number using protein content. Compared to BPH-1, a higher (18)F-FDG uptake was observed only in PC346C cells, whereas a higher (11)C-choline and markedly increased (11)C-acetate uptake was seen in all cancer cell lines. Androgens significantly modulated the uptake of (18)F-FDG in LNCaP, PC346C and 22Rv1 cells, and of (11)C-choline in the PC346C and 22Rv1 cell line. No androgenic effect on (11)C-choline and (18)F-FDG uptake was observed in PC-3 and PC346DCC cells. (11)C-Acetate uptake was independent of androgen status in all PCa cell lines studied. (18)F-FDG uptake in PCa cell lines showed the highest variability and strongest androgen effect, suggesting its poor potential for metabolic imaging of advanced PCa. In contrast to (18)F-FDG and (11)C-choline, (11)C-acetate uptake was unaffected by androgens and thus (11)C-acetate seems best for monitoring PCa progression

Ethylene C2H3D isotopologue: high resolution study of v6, v4, v8, v7 and v10 fundamentals

High Resolution Fourier transform infrared spectra of the C2H3D molecule were recorded with Doppler limited resolution in the region of 600 - 1250 cm-1 at room temperature. The measurements were carried out under several different absorption conditions using the Bruker 120 HR spectrometer in Braunschweig Technical University. Five fundamentals v6, v4, v8, v7, and v10 were observed and found to be perturbed by different resonance interactions. About 6000 lines were assigned in the recorded spectrum. They were used then in the weighted fit procedure with the effective Hamiltonian taking into account five strongly interacting states