Infrared radiation measurements of combustion gases Fourth quarterly progress report, Apr. 1 - Jun. 30, 1965

Carbon dioxide fundamental absorption spectrum at 1500 deg Kelvi

Improved real-time imaging spectrometer

An improved AOTF-based imaging spectrometer that offers several advantages over prior art AOTF imaging spectrometers is presented. The ability to electronically set the bandpass wavelength provides observational flexibility. Various improvements in optical architecture provide simplified magnification variability, improved image resolution and light throughput efficiency and reduced sensitivity to ambient light. Two embodiments of the invention are: (1) operation in the visible/near-infrared domain of wavelength range 0.48 to 0.76 microns; and (2) infrared configuration which operates in the wavelength range of 1.2 to 2.5 microns

Infrared radiation measurements of combustion gases third quarterly progress report, 1 jan. - 31 mar. 1965

Infrared absorption spectrum measurements of carbon monoxide - exhaust gase

The study of base heating by radiation from exhaust gases final report, oct. 1, 1963 - sep. 30, 1964

Base heating by radiation from exhaust gase

Efek Asam Metoksiasetat Terhadap Kondrogenesis Jari Anggota Tubuh Depan Mencit (Mus Musculus) Swiss Webster

Asam metoksiasetat (MAA) dapat mengakibatkan kelainan digit anggota tubuh depan mencit Swiss Webster (SW). Penelitian ini bertujuan untuk mengetahui gangguan kondrogenesis jari anggota tubuh depan akibat perlakuan dengan MAA. MAA diberikan secara gavage pada mencit SW umur kebuntingan 11 hari. Penentuan kondrogenesis dilakukan pada rigi jari III dan IV dengan mengamati sayatan plantar tunas anggota tubuh yang diwarnai Hematoksilin-Eosin. Komponen matriks ekstraseluler; asam hialuronat (AH) dan kondroitin sulfat (KS) diwarnai dengan Alcian blue 1%, sedangkan kolagen (KOL) ditentukan dari hasil pewarnaan Azan Heidenhain. Hasil penelitian menunjukkan, bahwa sel mesenkim di wilayah bakal rigi jari IV dan sekitarnya mengalami apoptosis. Sel mesenkim yang bermigrasi ke tempat kondensasi rigi jari IV jumlahnya menurun, sehingga diferensiasi sel mesenkim menjadi kondroblas terganggu, sintesis asam hialuronat AH sedikit, dan hanya meningkat ketika sel mesenkim terkondensasi. Demikan juga kehadiran KS terlambat dan kandungannya rendah, bahkan kolagen tidak ditemukan karena komponen sel yang menyusun rigi jari IV masih berupa kondroblas. Dengan demikian dapat disimpulkan, bahwa MAA mengganggu kondensasi mesenkim pada pembentukan rigi jari akibat jumlah sel yang berkurang, sehingga menghambat diferensiasi sel maupun sintesis komponen matriks ekstrasel rigi jari

Gradient Clogging in Depth Filtration

We investigate clogging in depth filtration, in which a dirty fluid is ``cleaned'' by the trapping of dirt particles within the pore space during flow through a porous medium. This leads to a gradient percolation process which exhibits a power law distribution for the density of trapped particles at downstream distance x from the input. To achieve a non-pathological clogging (percolation) threshold, the system length L should scale no faster than a power of ln w, where w is the width. Non-trivial behavior for the permeability arises only in this extreme anisotropic geometry.Comment: 4 pages, 3 figures, RevTe

Transport and Boundary Scattering in Confined Geometries: Analytical Results

We utilize a geometric argument to determine the effects of boundary scattering on the carrier mean-free path in samples of various cross sections. Analytic expressions for samples with rectangular and circular cross sections are obtained. We also outline a method for incorporating these results into calculations of the thermal conductivity.Comment: 35 pages, Late

Dielectric multilayer waveguides for TE and TM mode matching

We analyse theoretically for the first time to our knowledge the perfect phase matching of guided TE and TM modes with a multilayer waveguide composed of linear isotropic dielectric materials. Alongside strict investigation into dispersion relations for multilayer systems, we give an explicit qualitative explanation for the phenomenon of mode matching on the basis of the standard one-dimensional homogenization technique, and discuss the minimum number of layers and the refractive index profile for the proposed device scheme. Direct applications of the scheme include polarization-insensitive, intermodal dispersion-free planar propagation, efficient fibre-to-planar waveguide coupling and, potentially, mode filtering. As a self-sufficient result, we present compact analytical expressions for the mode dispersion in a finite, N-period, three-layer dielectric superlattice.Comment: 13 pages with figure

Discrete Model of Ideological Struggle Accounting for Migration

A discrete in time model of ideological competition is formulated taking into account population migration. The model is based on interactions between global populations of non-believers and followers of different ideologies. The complex dynamics of the attracting manifolds is investigated. Conversion from one ideology to another by means of (i) mass media influence and (ii) interpersonal relations is considered. Moreover a different birth rate is assumed for different ideologies, the rate being assumed to be positive for the reference population, made of initially non-believers. Ideological competition can happen in one or several regions in space. In the latter case, migration of non-believers and adepts is allowed; this leads to an enrichment of the ideological dynamics. Finally, the current ideological situation in the Arab countries and China is commented upon from the point of view of the presently developed mathematical model. The massive forced conversion by Ottoman Turks in the Balkans is briefly discussed.Comment: 24 pages, with 5 figures and 52 refs.; prepared for a Special issue of Advances in Complex System

Suppression of Kondo effect in a quantum dot by external irradiation

We demonstrate that the external irradiation brings decoherence in the spin states of the quantum dot. This effect cuts off the Kondo anomaly in conductance even at zero temperature. We evaluate the dependence of the DC conductance in the Kondo regime on the power of irradiation, this dependence being determined by the decoherence.Comment: 4 pages, 1 figur