Guest Artist Concert Early Music Series: Richard Boothby, viola da gamba, Shalev Ad-El, harpsichord, January 13, 1998

This is the concert program of the Guest Artist Concert Early Music Series: Richard Boothby, viola da gamba, Shalev Ad-El, harpsichord performance on Tuesday, January 13, 1998 at 8:00 p.m., at the Tsai Performance Center, 685 Commonwealth Avenue. Works performed were Sonata for Viola da Gamba and Obligato Harpsichord No. 1 in G major, BWV 1027 by Johann Sebastian Bach, Toccata in E minor for Harpsichord, BWV 914 by J. S. Bach, Sonata for Viola da Gamba and Obligato Harpsichord No. 2 in D major, BWV 1028 by J. S. Bach, Sonata for Viola da Gamba and Obligato Harpsichord No. 3 in G minor, BWV 1029 by J. S. Bach, Toccata in D minor for Harpsichord, BWV 913 by J. S. Bach, and Prélude, Fantaisie, Plainte et Charivari by Marin Marais. Digitization for Boston University Concert Programs was supported by the Boston University Humanities Library Endowed Fund

Early Music Series: Carol Lieberman, baroque violin, Daniel Stepner, baroque violin, Laura Jeppesen, viola da gamba, and Mark Kroll, harpsichord, April 4, 1986

This is the concert program of the Early Music Series: Carol Lieberman, baroque violin, Daniel Stepner, baroque violin, Laura Jeppesen, viola da gamba, and Mark Kroll, harpsichord performance on Friday, April 4, 1986 at 8:00 p.m., at the Concert Hall, 855 Commonwealth Avenue. Works performed were Partita III from "Harmonia Artificiosa-Ariosa" by Heinrich Ignaz Franz Biber, Sonata 12 for Two Violins, Gamba and Continuo by Dario Castello, Suite for Viola da gamba and Continuo in A minor, from Book III of "Pieces de viole" by Marin Marais, Sonata for 2 violins in E minor, Op. 3 NO. 5 by Jean-Marie Leclair, and Recreation de Musique, Op. 8 NO. 2 by J. M. Leclair. Digitization for Boston University Concert Programs was supported by the Boston University Humanities Library Endowed Fund

Effect of different levels of urea treated Gamba hay on growth performance of Yankasa rams

Twenty four (24) Yankasa yearling rams were used to determine the effect of feeding high levels of urea treated gamba hay (Andropogon gayanus). The rams aged 15 – 18 months with an average weight of 22 .45kg were randomly allocated to one of four dietary groups, rams in group A served as control and were offered untreated gamba hay at 2.5% of their body weight while rams in groups 2, 3 and 4 where offered 5%, 6% and 7% urea treated gamba hay respectively at 2.5% of their body weight for 90 days. All rams had equal access to water, salt lick blocks and concentrate fed at 2.0% of their body weight. Data was collected daily on feed intake, while live body weight changes and body condition score were measured weekly. Dry matter composition of the gamba hay offered declined as the level of urea treatment increased, the crude protein content of the diets also increased as the level of urea treatment increased. However the values of NDF and ADF declined as the level of urea treatment increased. Rams fed 6% and 7% treated gamba hay had significantly the highest total dry matter intake while rams fed untreated gamba hay had significantly (P<0.05) the lowest weight gain. There was no significant (P>0.05) difference in the weight gains of rams fed 6% and those fed 7% urea treated gamba hay and the rams in both groups had significantly (P<0.05) the highest weight gains. Rams fed the 6% urea treated gamba hay had the best FCR. It can be concluded that 6% &7% urea treated gamba gave similar performance but 6% had the better feed conversion ratio and is more cost effective.Key words: Urea treated gamba hay, cost effectivenes

Boston University Early Music Series, January 27, 1995

This is the concert program of the Boston University Early Music Series performance on Friday, January 27, 1995 at 8:00 p.m., at the Tsai Performance Center, 685 Commonwealth Avenue, Boston, Massachusetts. Works performed were Sonata in C major for Flute and Basso Continuo, BWV 1033 by Johann Sebastian Bach and Carl Philipp Emanuel Bach, Sonata in G major for Viola da Gamba and Basso Continuo from "Der Getreue Musik-Meister" by Georg Philipp Telemann, Sonata in E minor for Flute and Basso Continuo by Frantisek Benda, Biblical Sonata IV for Harpsichord "Hiskia agonizzante e risanto" by Johann Kuhnau, Sonata in E minor for Flute and Basso Continuo, W. 120 by Carl Philipp Emanuel Bach, and "Paris" Quartet in E minor for Flute, Violin, Viola da Gamba and Basso Continuo by Georg Philipp Telemann. Digitization for Boston University Concert Programs was supported by the Boston University Humanities Library Endowed Fund

Performance of Yankasa Rams Fed Andropogon gayanus (Gamba Grass) Hay Supplemented with Faidherbia albida (Acacia) Pods

A 91-day feeding trial was conducted to determine the effect of supplementing gamba grass (Andropogon gayanus) hay with acacia (Faidherbia albida) pods on the performance of Yankasa rams. Twelve yankasa rams, aged between 6 – 8 months with average live weight of 17kg were subjected to four dietary treatments, each consisting of three replicates in a randomized complete block design. The four dietary treatments were T1 (Gamba grass hay + 0% acacia pods), T2 (Gambas grass hay + 10% acacia pods), T3 (Gamba grass hay + 20% acacia pods) and T4 (Gamba grass hay + 30% acacia pods). The result showed that rams fed T1 recorded the least feed intake and weight again than T2, T3 and T4 which were supplemented with acacia pods.   The live weight gain of Yankasa rams in the supplemented diets were not significantly (P<0.05) different. The water intake of the rams was not significantly (P<0.05) affected by the acacia pods supplementation. The nutrient digestibility was significantly (P<0.05) affected by the acacia pods supplementation. Rams fed supplemented diets had significantly (P<0.05) improved nutrient digestibility than those fed the unsupplemented diet. The study revealed that gamba grass hay when supplemented with acacia pods  at 20% DM intake would significantly (P < 0.05) lead to increased live weight gain of Yankasa rams. Keywords: Performance, Yankasa rams, Gamba grass hay, Acacia pod

Blood Biochemical Profile and Carcass Characteristics of Weaner Rabbits Fed Varying Inclusion Levels of Gamba Grass (Andropogon gayanus Kunth.) Forage

A study was conducted to investigate the effect of varying inclusion levels of Gamba grass (Andropogon gayanus Kunth) forage on haematological, blood biochemical and carcass characteristics of weaner rabbits. A total of 20 male rabbits of mixed breeds with an average initial weight of 450g were randomly assigned into four dietary treatments containing varying inclusion levels of gamba grass forage (0, 5, 10 and 15%). There were four rabbits per treatment, each serving as a replicate in a completely randomized design. Blood samples were collected at the end of eight (8) week feeding period before the carcass analysis.. Results indicated that there were significant (P<0.05) increasing trend in the haematological and blood biochemical parameters measured. There were 51% and 55% increases (P<0.05) in total protein (8.53 vs. 5.65g/dl) and calcium ions (2.65 vs. 1.18mmol/dl) in rabbits fed diet containing 15% inclusion level of gamba grass forage compared to the control. However, there were 10% and 17% decreases (P<0.05) in white blood cells (4.92 vs. 4.43%) and alkaline phosphate (89.33 vs. 76.33IU/dl) in rabbits fed the control diet than those fed diet containing 15% inclusion level of gamba grass. Also, there were 13% and 49% increase (P<0.05) in dressing percentage (54.80 vs. 48.60%) and weight of thigh (16.95 vs. 11.35%) in rabbits fed diet containing 15% inclusion level of gamba grass forage compared to the control. However, length of small intestine and weights of heart, head, stomach and small intestines were similar (P>0.05) across the treatments, respectively. It was concluded that gamba grass forage can be included up to 15% in the diet of weaner rabbits, without adverse effect on haematological, biochemical profile and carcass characteristics of the rabbits in Northern Guinea savanna of Nigeria. Gamba grass (Andropogon gayanus Kunth) forage can be included in the diets of weaner rabbits to reduce cost of production.Keywords: Blood, competition, carcass, feed, gamba, Nigeria, rabbi

Faculty concert: Michael Zaretsky, Marina Minkin, and Amy Schneider, January 15, 1999

This is the concert program of the Faculty Concert of Michael Zaretsky, Marina Minkin, and Amy Schneider performance on Friday, January 15, 1999 at 8:00 p.m., at the Tsai Performance Center, 685 Commonwealth Avenue, Boston, Massachusetts. Works performed were Haiku by Marilyn Ziffrin, Aria, Recitativo, and Chorale by Jakov Jakoulov, and Three Sonatas for Viola da Gamba by Johann Sebastian Bach. Digitization for Boston University Concert Programs was supported by the Boston University Humanities Library Endowed Fund

Management options for gamba grass (Andropogon gayanus) in conservation areas of Cape York Peninsula Final report

Andropogon gayanus (gamba grass) is a high-biomass grass native to tropical and subtropical Africa and introduced into Australia as a pasture grass. Under well-managed grazing conditions, gamba grass has proven a useful and palatable addition to tropical cattle pastures. However, it has also become a significant environmental weed and is considered an ecosystem transformer. In recognition of the significant threat posed by gamba grass, it has been listed (along with 4 other invasive grasses) as a key threatening process under the Environment Protection and Biodiversity Conservation Act 1999 (EPBC Act). One of the major problems limiting the effective management of gamba grass once established as an environmental weed is the lack of registered herbicides for use in natural systems and conservation areas. Glyphosate is the primary herbicide in use in northern Australia. There are several current and emerging issues which make a reliance on glyphosate for gamba grass control problematic. Application of glyphosate is logistically difficult in wet and remote areas, it has no residual action and largely relies on follow-up treatments, and there are emerging resistance issues. In addition, there is growing concern that glyphosate may be linked to carcinogenicity, genotoxicity and epidemiological disorders. Alternative herbicides are critical to allow long-term, effective and timely control of gamba grass in the environments encountered on Cape York Peninsula and across northern Australia. The goal of this project was to collate existing knowledge related to control and management of gamba grass and test alternative herbicide options for use in natural areas of Cape York Peninsula. Three herbicides were tested alongside glyphosate in field trials and 10 residual pre-emergence herbicides were tested in pot trials. Neither the field nor pot trials identified a clear suitable alternative to glyphosate that selectively controlled gamba grass with low off-target effects in the contexts in which we tested them. However, there are several herbicides that warrant further testing at a range of additional application rates and in a range of environments (flupropanate, clomazone, oxyfluorfen, imazapyr and indaziflam). In particular, the granular form of flupropanate is worthy of further experimentation because of its portability in the field and flexibility in application, and because it showed the most promising results in the field trials. Ultimately, land managers may need to trade-off significant, short-term, off-target effects for longer term, more effective and permanent control of gamba grass with herbicides

Propagation of L1L^{1} and L∞L^{\infty} Maxwellian weighted bounds for derivatives of solutions to the homogeneous elastic Boltzmann Equation

We consider the $n$-dimensional space homogeneous Boltzmann equation for elastic collisions for variable hard potentials with Grad (angular) cutoff. We prove sharp moment inequalities, the propagation of $L^1$-Maxwellian weighted estimates, and consequently, the propagation $L^\infty$-Maxwellian weighted estimates to all derivatives of the initial value problem associated to the afore mentioned problem. More specifically, we extend to all derivatives of the initial value problem associated to this class of Boltzmann equations corresponding sharp moment (Povzner) inequalities and time propagation of $L^1$-Maxwellian weighted estimates as originally developed A.V. Bobylev in the case of hard spheres in 3 dimensions; an improved sharp moments inequalities to a larger class of angular cross sections and $L^1$-exponential bounds in the case of stationary states to Boltzmann equations for inelastic interaction problems with `heating' sources, by A.V. Bobylev, I.M. Gamba and V.Panferov, where high energy tail decay rates depend on the inelasticity coefficient and the the type of `heating' source; and more recently, extended to variable hard potentials with angular cutoff by I.M. Gamba, V. Panferov and C. Villani in the elastic case collision case and so $L^1$-Maxwellian weighted estimated were shown to propagate if initial states have such property. In addition, we also extend to all derivatives the propagation of $L^\infty$-Maxwellian weighted estimates to solutions of the initial value problem to the Boltzmann equations for elastic collisions for variable hard potentials with Grad (angular) cutoff.Comment: 24 page

Finite-time Lyapunov exponents for products of random transformations

It is shown how continuous products of random transformations constrained by a generic group structure can be studied by using Iwasawa's decomposition into ``angular'', ``diagonal'' and ``shear'' degrees of freedom. In the case of a Gaussian process a set of variables, adapted to the Iwasawa decomposition and still having a Gaussian distribution, is introduced and used to compute the statistics of the finite-time Lyapunov spectrum of the process. The variables also allow to show the exponential freezing of the ``shear'' degrees of freedom, which contain information about the Lyapunov eigenvectors