Concentration and Purification of Diphtheria Toxoid by Means of Sulphosalicylic Acid for the Preparation of Diphtheria Prophylactic

The possiblity of using sulphosalicylic acid for the precipitation of diphtheria toxoid was examined. It was found that under certain conditions this acid may be used with satisfactory results. The diphtheria toxoid precipitated with sulphosalicylic acid and further purified with ammonium sulphate and adsorbed on aluminium phosphate, yielded a product which satisfied all require ments for a goo d diphtheria prophylactic

THE ROLE OF RENEWABLE ENERGY SOURCES IN FUTURE ELECTRICITY SUPPLY

Članak se bavi ulogom obnovljivih izvora energije u opskrbi električnom energijom. Izvorni razlog za njihovo uvođenje i razvoj bio je stvaranje protuteže porastu stvaranja stakleničkih plinova koji nastaju pri proizvodnji električne energije iz fosilnih goriva. Europska unija predstavlja najbolji primjer delegirane politike i propisa koje zakonodavci i vlade prikladno tumače. Zakoni na području energije i okoliša usvojeni u Republici Hrvatskoj približili su se europskom zakonodavstvu, s ciljem integriranja Republike Hrvatske u untarnje europsko tržište električne energije i Europsku uniju.This article deals with the role of renewable sources in the electricity supply industry. The original reason for their introduction and development was to help offset the rise in the production of greenhouse gases due to electricity genaration from fossil fuels. The EU represents the best example of federally delegated policy and regulation interpreted differently by national regulators and goverments. The laws in the area of energy and the environment enacted by the Republic of Croatia have been approximated to the European legislation in order for the Republic of Croatia to be integrated in the internal market and EU

Meron excitations in the nu =1 quantum Hall bilayer and the plasma analogy

We study meron quasiparticle excitations in the \nu = 1 quantum Hall bilayer. Considering the well known single meron state, we introduce its effective form, valid in the longdistance limit. That enables us to propose two (and more) meron states in the same limit. Further, establishing a plasma analogy of the (111) ground state, we find the impurities that play the role of merons and derive meron charge distributions. Using the introduced meron constructions in generalized (mixed) ground states and corresponding plasmas for arbitrary distance between the layers, we calculate the interaction between the construction implied impurities. We also find a correspondence between the impurity interactions and meron interactions. This suggests a possible explanation of the deconfinement of the merons recently observed in the experiments.Comment: 5 pages, 3 figure

Effects of anoxia on 31P NMR spectra of Phycomyces blakesleeanus during development

The method of 31P NMR spectroscopy was used to investigate the effects of anoxia on Phycomyces blakesleea­nus mycelium during development. The greatest changes were recorded in the PPc, NADH, and α-ATP signals. Decrease of PPc signal intensity is due to chain length reduction and reduction in number of PPn molecules. Smaller decrease of β-ATP compared to α-ATP signal intensity can be attributed to maintenance of ATP concentration at the expense of PPn hydrolysis. Sensitivity to anoxia varies with the growth stage. It is greatest in 32-h and 44-h mycelium, in which PPn is used as an additional energy source, while the smallest effect was noted for 36-h fungi

Error Probability in Redundant Packet Sending over IP Network

In this paper we calculate error probability of packetized signal when method of redundant packet sending is used in IP network. The number of repeated signaling packets from each interval of packetization is determined to achieve the desired error probability. The method for management of this number of repetitions is developed based on the new analysis. This method is especially important in the case of sending signaling criteria of classic telephony network over IP network, because it makes possible to reach the same error probability as in classic telephony network

Contribution to the development of a digital twin based on CMM to support the inspection process

Digital twin (DT) based on CMMs acting as a mirror between the physical and virtual measuring system and process. The inspection planning process performed on the virtual components of DT, and execution of measurement on the physical components. In this paper the measurement system with the DEA-IOTA-2203 was used as a physical twin, and a virtual machine, generated after modeling and configuring in PTC Creo software. Also, a simulation process was performed in order to check the collision and generate a measuring path for one example prismatic part. The information flow is unidirectional and flowing from the virtual to the physical inspection system based on CMM. In this way, a data format or a list of instructions for the physical machine and its movements per axes is provided. Virtual measurement system is developed for inspection of the standard types of tolerances and family of prismatic mechanical parts. The result of this paper is a new contribution to the development of the digital twin for CMM based on unidirectional information flow by.ncl (DMIS) file. The application of the results of DT development is especially pronounced when planning the inspection of prismatic parts with a large number of tolerances in industrial conditions

The Line Emission Region in III Zw 2: Kinematics and Variability

We have studied the Ly-al, Hbeta, Halpha and Mg II2798 line profiles of the Seyfert 1 galaxy III Zw 2. The shapes of these broad emission lines show evidence of a multicomponent origin and also features which may be identified as the peaks due to a rotating disk. We have proposed a two-component Broad Line Region (BLR) model consisting of an inner Keplerian relativistic disk and an outer structure surrounding the disk. The results of the fitting of the four Broad Emission Lines (BELs) here considered, are highly consistent in both the inner and outer component parameters. Adopting a mass of approx. 2 E8 sollar masses for the central object we found that the outer radius of the disk is approximately equal for the four considered lines (approx 0.01 pc). However, the inner radius of the disk is not the same: 0.0018 pc for Ly-alpha, 0.0027 pc for Mg II, and 0.0038 pc for the Balmer lines. This as well as the relatively broad component present in the blue wings of the narrow [OIII] lines indicate stratification in the emission-line region. Using long-term Hbeta observations (1972-1990, 1998) we found a flux variation of the BEL with respect to the [OIII] lines.Comment: ApJ, accepted, 22 pages, 10 figure

Composite bosons in bilayer nu = 1 system: An application of the Murthy-Shankar formalism

We calculate the dispersion of the out-of-phase mode characteristic for the bilayer nu = 1 quantum Hall system applying the version of Chern-Simons theory of Murthy and Shankar that cures the unwanted bare electron mass dependence in the low-energy description of quantum Hall systems. The obtained value for the mode when d, distance between the layers, is zero is in a good agreement with the existing pseudospin picture of the system. For d nonzero but small we find that the mode is linearly dispersing and its velocity to a good approximation depends linearly on d. This is in agreement with the Hartree-Fock calculations of the pseudospin picture that predicts a linear dependance on d, and contrary to the naive Hartree predictions with dependence on the square-root of d. We set up a formalism that enables one to consider fluctuations around the found stationary point values. In addition we address the case of imbalanced layers in the Murthy-Shankar formalism.Comment: 10 pages, 1 figur