Metabolism of Urea Nitrogen by Rumen Ciliate Protozoa

The objective of this research was to study the utilization of urea by mixed populations of rumen protozoa in vitro in the absence of bacteria. Initial experiments were conducted to determine the validity of chemical determinations used by other researchers in quantitating the nitrogen fractions in the medium following incubation. An experiment was conducted to determine the utilization of urea by rumen bacteria and this served as the basis for evaluating utilization of urea by protozoa. Culture techniques were developed to grow and maintain protozoa under in vitro conditions. Three experiments were conducted in which various nitrogen fractions of fermentation liquid were used as measures of urea utilization by rumen protozoa

Eigenvalue Gaps of Random Perturbations of Large Matrices

The current work applies some recent combinatorial tools due to Jain to control the eigenvalue gaps of a matrix $M_n = M + N_n$ where $M$ is deterministic, symmetric with large operator norm and $N_n$ is a random symmetric matrix with subgaussian entries. One consequence of our tail bounds is that $M_n$ has simple spectrum with probability at least $1 - \exp(-n^{2/15})$ which improves on a result of Nguyen, Tao and Vu in terms of both the probability and the size of the matrix $M$.Comment: 10 page

Fleet Cost Analysis Based on GPS Data Processing

U ovome završnom radu prikazan je način pohranjivanja velike količine GPS podataka u Microsoft SQL server, izračun troškova i udaljenosti prijeđenog puta vozila te prikaz ruta u Google Earth-u. Za potrebe izračuna troškova izrađena je aplikacija pomoću Microsoft Visual Studio 2015 koja se povezuje sa SQL serverom te stvara kml datoteku koja služi za prikaz rute vozila u Google Earth-u na području Zagreba i okolice.In this work has been shown how to save and processing large quantities of data to Microsoft SQL server, calculate the cost and kilometrage of vehicles. Data of the vehicle routes is display in Google Earth using application that was made in Microsoft Visual Studio 2015. For the purpose of this work the application can connect to SQL server where it stores large data based on GPS tracking vehicles and create a kml file which is used to display vehicle routes in Google Earth on areas of Zagreb and surroundings

Fleet Cost Analysis Based on GPS Data Processing

U ovome završnom radu prikazan je način pohranjivanja velike količine GPS podataka u Microsoft SQL server, izračun troškova i udaljenosti prijeđenog puta vozila te prikaz ruta u Google Earth-u. Za potrebe izračuna troškova izrađena je aplikacija pomoću Microsoft Visual Studio 2015 koja se povezuje sa SQL serverom te stvara kml datoteku koja služi za prikaz rute vozila u Google Earth-u na području Zagreba i okolice.In this work has been shown how to save and processing large quantities of data to Microsoft SQL server, calculate the cost and kilometrage of vehicles. Data of the vehicle routes is display in Google Earth using application that was made in Microsoft Visual Studio 2015. For the purpose of this work the application can connect to SQL server where it stores large data based on GPS tracking vehicles and create a kml file which is used to display vehicle routes in Google Earth on areas of Zagreb and surroundings

Effect of Calcium and Phosphorus Sources and Levels in Growing-Finishing Swine Diets

A shortage of phosphorus supplements existed in early 1974 and this experiment was conducted to study the effect of supplying all of the supplementary phosphorus in the diet with the use of meat and bone meals containing 4% phosphorus, 8% calcium and 50% protein. Calcium and phosphorus levels were also evaluated using ratios of calcium to phosphorus of 1.2:1, 1:1 and 1:1.25

The Effects of Feed Additives in Swine Diets

This experiment was conducted exactly as the previous one to obtain further data on the effectiveness of feed additives fed for a 5-week period, the effect of withdrawal of feed additives after 5 weeks on future performance and the effect of the antibiotic tylosin when fed during the finishing period

Blood Meal in Diets for Growing-Finishing Pigs

The experiment reported herein was conducted to obtain information on the value of ring dried blood meal, a process that subjects the meal to less severe heat during the drying process

Effect of Various Levels of Blood Meal in Swine Diets

This experiment was conducted to obtain additional data on the value of ring dried blood meal in growing-finishing diets for swine and also to study levels of 4, 6 and 8% blood meal in the diet when added to replace an equivalent amount of protein supplied by soybean meal

Spectral broadening of 2 mJ femtosecond pulses in a compact air-filled convex-concave multi-pass cell

Multi-pass cell (MPC) based temporal pulse compressors have emerged in the last years as a powerful and versatile solution to the intrinsic issue of long pulses from Yb-based high-power ultrafast lasers. However, the spectral broadening of high-energy (typically more than 100 uJ) pulses has only been realized in complex setups, i.e., in large and costly, pressure-controlled vacuum chambers to avoid strong focusing, ionization, and damage on the mirrors. Here, we present spectral broadening of 2 mJ pulses in a simple and compact (60 cm long) multi-pass cell operated in ambient air. Instead of the traditional Herriott cell with concave-concave (CC/CC) mirrors, we use a convex-concave (CX/CC) design, where the beam stays large at all times allowing both to minimize damage and operate in ambient air. We demonstrate spectral broadening of 2.1 mJ pulses at 100 kHz repetition rate (200 W of average power) from 2.1 nm (pulse duration of 670 fs) to a spectral bandwidth of 24.5 nm, supporting 133 fs pulses with 96% transmission efficiency. We show the compressibility of these pulses down to 134 fs, and verify that the spectral homogeneity of the beam is similar to previously reported CC/CC designs. To the best of our knowledge, this is the first report of a CX/CC MPC compressor, operated at high pulse energies in air. Because of its simplicity, small footprint and low cost, we believe this demonstration will have significant impact in the ultrafast laser community.Comment: The following article has been submitted to Optics Letters. 4 pages, 4 figure

Feed Additives in Swine Diets

An experiment was conducted at the Cornbelt Research and Extension Center near Beresford, South Dakota, to determine the effectiveness of Mecadox and other feed additives fed for a 5-week period, to study the effect of withdrawal of feed additives at this time on future growth performance and to study the effect of the antibiotic tylosin when fed during the finishing period